{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-26733", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.165Z", "datePublished": "2024-04-03T17:00:20.437Z", "dateUpdated": "2025-05-04T08:55:10.662Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:55:10.662Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narp: Prevent overflow in arp_req_get().\n\nsyzkaller reported an overflown write in arp_req_get(). [0]\n\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\nentry and copies neigh->ha to struct arpreq.arp_ha.sa_data.\n\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\nthe sa_data buffer is just 14 bytes.\n\nIn the splat below, 2 bytes are overflown to the next int field,\narp_flags. We initialise the field just after the memcpy(), so it's\nnot a problem.\n\nHowever, when dev->addr_len is greater than 22 (e.g. MAX_ADDR_LEN),\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\nin arp_ioctl() before calling arp_req_get().\n\nTo avoid the overflow, let's limit the max length of memcpy().\n\nNote that commit b5f0de6df6dc (\"net: dev: Convert sa_data to flexible\narray in struct sockaddr\") just silenced syzkaller.\n\n[0]:\nmemcpy: detected field-spanning write (size 16) of single field \"r->arp_ha.sa_data\" at net/ipv4/arp.c:1128 (size 14)\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nModules linked in:\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb <0f> 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\nFS: 00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n <TASK>\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:870 [inline]\n __se_sys_ioctl fs/ioctl.c:856 [inline]\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\n entry_SYSCALL_64_after_hwframe+0x64/0xce\nRIP: 0033:0x7f172b262b8d\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\n </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/arp.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "97eaa2955db4120ce6ec2ef123e860bc32232c50", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f119f2325ba70cbfdec701000dcad4d88805d5b0", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a3f2c083cb575d80a7627baf3339e78fedccbb91", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a7d6027790acea24446ddd6632d394096c0f4667", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/arp.c"], "versions": [{"version": "2.6.12", "status": "affected"}, {"version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.211", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.150", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.150"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.7.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587"}, {"url": "https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50"}, {"url": "https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0"}, {"url": "https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91"}, {"url": "https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a"}, {"url": "https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667"}], "title": "arp: Prevent overflow in arp_req_get().", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20241101-0013/"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-11-01T17:03:11.240Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26733", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:52:00.464269Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:20.304Z"}}]}, "dataVersion": "5.1"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20241101-0013/"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-11-01T17:03:11.240Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26733", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:52:00.464269Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:16.215Z"}}], "cna": {"title": "arp: Prevent overflow in arp_req_get().", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "97eaa2955db4120ce6ec2ef123e860bc32232c50", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f119f2325ba70cbfdec701000dcad4d88805d5b0", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a3f2c083cb575d80a7627baf3339e78fedccbb91", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a7d6027790acea24446ddd6632d394096c0f4667", "versionType": "git"}], "programFiles": ["net/ipv4/arp.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.12", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.211", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.150", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.80", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.19", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.7", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/ipv4/arp.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587"}, {"url": "https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50"}, {"url": "https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0"}, {"url": "https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91"}, {"url": "https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a"}, {"url": "https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narp: Prevent overflow in arp_req_get().\n\nsyzkaller reported an overflown write in arp_req_get(). [0]\n\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\nentry and copies neigh->ha to struct arpreq.arp_ha.sa_data.\n\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\nthe sa_data buffer is just 14 bytes.\n\nIn the splat below, 2 bytes are overflown to the next int field,\narp_flags. We initialise the field just after the memcpy(), so it's\nnot a problem.\n\nHowever, when dev->addr_len is greater than 22 (e.g. MAX_ADDR_LEN),\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\nin arp_ioctl() before calling arp_req_get().\n\nTo avoid the overflow, let's limit the max length of memcpy().\n\nNote that commit b5f0de6df6dc (\"net: dev: Convert sa_data to flexible\narray in struct sockaddr\") just silenced syzkaller.\n\n[0]:\nmemcpy: detected field-spanning write (size 16) of single field \"r->arp_ha.sa_data\" at net/ipv4/arp.c:1128 (size 14)\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nModules linked in:\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb <0f> 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\nFS: 00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n <TASK>\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:870 [inline]\n __se_sys_ioctl fs/ioctl.c:856 [inline]\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\n entry_SYSCALL_64_after_hwframe+0x64/0xce\nRIP: 0033:0x7f172b262b8d\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\n </TASK>"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.211", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.150", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.80", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.19", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.7", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "2.6.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:55:10.662Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26733", "state": "PUBLISHED", "dateUpdated": "2025-05-04T08:55:10.662Z", "dateReserved": "2024-02-19T14:20:24.165Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-03T17:00:20.437Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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[0]\n\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\nentry and copies neigh->ha to struct arpreq.arp_ha.sa_data.\n\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\nthe sa_data buffer is just 14 bytes.\n\nIn the splat below, 2 bytes are overflown to the next int field,\narp_flags. We initialise the field just after the memcpy(), so it's\nnot a problem.\n\nHowever, when dev->addr_len is greater than 22 (e.g. MAX_ADDR_LEN),\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\nin arp_ioctl() before calling arp_req_get().\n\nTo avoid the overflow, let's limit the max length of memcpy().\n\nNote that commit b5f0de6df6dc (\"net: dev: Convert sa_data to flexible\narray in struct sockaddr\") just silenced syzkaller.\n\n[0]:\nmemcpy: detected field-spanning write (size 16) of single field \"r->arp_ha.sa_data\" at net/ipv4/arp.c:1128 (size 14)\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nModules linked in:\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb <0f> 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\nFS: 00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n <TASK>\n arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\n inet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\n sock_do_ioctl+0xdf/0x260 net/socket.c:1204\n sock_ioctl+0x3ef/0x650 net/socket.c:1321\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:870 [inline]\n __se_sys_ioctl fs/ioctl.c:856 [inline]\n __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\n entry_SYSCALL_64_after_hwframe+0x64/0xce\nRIP: 0033:0x7f172b262b8d\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\n </TASK>"}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: arp: Evita el desbordamiento en arp_req_get(). syzkaller inform\u00f3 una escritura desbordada en arp_req_get(). [0] Cuando se emite ioctl(SIOCGARP), arp_req_get() busca una entrada vecina y copia neigh-&gt;ha para estructurar arpreq.arp_ha.sa_data. El arp_ha aqu\u00ed es struct sockaddr, no struct sockaddr_storage, por lo que el b\u00fafer sa_data tiene solo 14 bytes. En el siguiente s\u00edmbolo, se desbordan 2 bytes al siguiente campo int, arp_flags. Inicializamos el campo justo despu\u00e9s de memcpy(), por lo que no es un problema. Sin embargo, cuando dev-&gt;addr_len es mayor que 22 (por ejemplo, MAX_ADDR_LEN), se sobrescribe arp_netmask, que podr\u00eda configurarse como htonl(0xFFFFFFFFUL) en arp_ioctl() antes de llamar a arp_req_get(). Para evitar el desbordamiento, limitemos la longitud m\u00e1xima de memcpy(). Tenga en cuenta que el commit b5f0de6df6dc (\"net: dev: Convert sa_data to flexible array in struct sockaddr\") simplemente silenci\u00f3 a syzkaller. [0]: memcpy: escritura detectada en todos los campos (tama\u00f1o 16) de un solo campo \"r-&gt;arp_ha.sa_data\" en net/ipv4/arp.c:1128 (tama\u00f1o 14) ADVERTENCIA: CPU: 0 PID: 144638 en net /ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 M\u00f3dulos vinculados en: CPU: 0 PID: 144638 Comm: syz-executor.4 No contaminado 6.1.74 #31 Nombre de hardware: QEMU PC est\u00e1ndar (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 01/04/2014 RIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128 C\u00f3digo: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb &lt;0f&gt; 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6 RSP: 0018:ffffc900050b7998 EFLAGS: 00010286 RAX: 00000000000000000 RBX: ffff88803a815000 RCX: 0000000000000 000 RDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001 RBP: ffffc900050b7a98 R08: 00000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000 R13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010 FS: 0000 7f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4 : 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 000000 0000000400 PKRU: 55555554 Seguimiento de llamadas: arp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261 inet_ioctl+0x314/0x3a0 net/ ipv4/af_inet.c:981 sock_do_ioctl+0xdf/0x260 net/socket.c:1204 sock_ioctl+0x3ef/0x650 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c:870 [en l\u00ednea] __se_sys_ioctl fs/ioctl.c:856 [en l\u00ednea] __x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [en l\u00ednea] do_syscall_64+0x37/0x90 arch/x86/ entrada/common.c:81 entrada_SYSCALL_64_after_hwframe+0x64/0xce RIP: 0033:0x7f172b262b8d C\u00f3digo: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 &lt;48&gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f172bf300b8 EFLAGS: 0000024 6 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX : 00007f172b3abf80 RCX: 00007f172b262b8d RDX: 0000000020000000 RSI: 0000000000008954 RDI: 00000000000000003 RBP: 00007f172b2d3493 R08: 0 000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000000000 R13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000 "}], "id": "CVE-2024-26733", "lastModified": "2025-03-17T16:02:47.887", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-04-03T17:15:51.040", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3ab0d6f8289ba8402ca95a9fc61a34909d5e1f3a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97eaa2955db4120ce6ec2ef123e860bc32232c50"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3f2c083cb575d80a7627baf3339e78fedccbb91"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a7d6027790acea24446ddd6632d394096c0f4667"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dbc9b22d0ed319b4e29034ce0a3fe32a3ee2c587"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f119f2325ba70cbfdec701000dcad4d88805d5b0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20241101-0013/"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:5255", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.67.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-08-13T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2025:3215", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.61.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-03-26T00:00:00Z"}], "bugzilla": {"description": "kernel: arp: Prevent overflow in arp_req_get().", "id": "2273247", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273247"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-122", "details": ["In the Linux kernel, the following vulnerability has been resolved:\narp: Prevent overflow in arp_req_get().\nsyzkaller reported an overflown write in arp_req_get(). [0]\nWhen ioctl(SIOCGARP) is issued, arp_req_get() looks up an neighbour\nentry and copies neigh->ha to struct arpreq.arp_ha.sa_data.\nThe arp_ha here is struct sockaddr, not struct sockaddr_storage, so\nthe sa_data buffer is just 14 bytes.\nIn the splat below, 2 bytes are overflown to the next int field,\narp_flags. We initialise the field just after the memcpy(), so it's\nnot a problem.\nHowever, when dev->addr_len is greater than 22 (e.g. MAX_ADDR_LEN),\narp_netmask is overwritten, which could be set as htonl(0xFFFFFFFFUL)\nin arp_ioctl() before calling arp_req_get().\nTo avoid the overflow, let's limit the max length of memcpy().\nNote that commit b5f0de6df6dc (\"net: dev: Convert sa_data to flexible\narray in struct sockaddr\") just silenced syzkaller.\n[0]:\nmemcpy: detected field-spanning write (size 16) of single field \"r->arp_ha.sa_data\" at net/ipv4/arp.c:1128 (size 14)\nWARNING: CPU: 0 PID: 144638 at net/ipv4/arp.c:1128 arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nModules linked in:\nCPU: 0 PID: 144638 Comm: syz-executor.4 Not tainted 6.1.74 #31\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014\nRIP: 0010:arp_req_get+0x411/0x4a0 net/ipv4/arp.c:1128\nCode: fd ff ff e8 41 42 de fb b9 0e 00 00 00 4c 89 fe 48 c7 c2 20 6d ab 87 48 c7 c7 80 6d ab 87 c6 05 25 af 72 04 01 e8 5f 8d ad fb <0f> 0b e9 6c fd ff ff e8 13 42 de fb be 03 00 00 00 4c 89 e7 e8 a6\nRSP: 0018:ffffc900050b7998 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff88803a815000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff8641a44a RDI: 0000000000000001\nRBP: ffffc900050b7a98 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000000 R11: 203a7970636d656d R12: ffff888039c54000\nR13: 1ffff92000a16f37 R14: ffff88803a815084 R15: 0000000000000010\nFS: 00007f172bf306c0(0000) GS:ffff88805aa00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f172b3569f0 CR3: 0000000057f12005 CR4: 0000000000770ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n<TASK>\narp_ioctl+0x33f/0x4b0 net/ipv4/arp.c:1261\ninet_ioctl+0x314/0x3a0 net/ipv4/af_inet.c:981\nsock_do_ioctl+0xdf/0x260 net/socket.c:1204\nsock_ioctl+0x3ef/0x650 net/socket.c:1321\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:870 [inline]\n__se_sys_ioctl fs/ioctl.c:856 [inline]\n__x64_sys_ioctl+0x18e/0x220 fs/ioctl.c:856\ndo_syscall_x64 arch/x86/entry/common.c:51 [inline]\ndo_syscall_64+0x37/0x90 arch/x86/entry/common.c:81\nentry_SYSCALL_64_after_hwframe+0x64/0xce\nRIP: 0033:0x7f172b262b8d\nCode: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f172bf300b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007f172b3abf80 RCX: 00007f172b262b8d\nRDX: 0000000020000000 RSI: 0000000000008954 RDI: 0000000000000003\nRBP: 00007f172b2d3493 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000000b R14: 00007f172b3abf80 R15: 00007f172bf10000\n</TASK>", "A vulnerability was found in the arp_req_get() function in the Linux kernel when handling the SIOCGARP ioctl (input/output control) request. This function copies data over into a fixed-length buffer which could result in a buffer overflow and cause memory corruption, undefined behavior, or crashes."], "name": "CVE-2024-26733", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26733\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26733\nhttps://lore.kernel.org/linux-cve-announce/2024040358-CVE-2024-26733-617f@gregkh/T"], "threat_severity": "Moderate"}