{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49992", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.387Z", "datePublished": "2025-06-18T11:00:52.581Z", "dateUpdated": "2025-06-18T11:00:52.581Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-18T11:00:52.581Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mprotect: only reference swap pfn page if type match\n\nYu Zhao reported a bug after the commit \"mm/swap: Add swp_offset_pfn() to\nfetch PFN from swap entry\" added a check in swp_offset_pfn() for swap type [1]:\n\n kernel BUG at include/linux/swapops.h:117!\n CPU: 46 PID: 5245 Comm: EventManager_De Tainted: G S O L 6.0.0-dbg-DEV #2\n RIP: 0010:pfn_swap_entry_to_page+0x72/0xf0\n Code: c6 48 8b 36 48 83 fe ff 74 53 48 01 d1 48 83 c1 08 48 8b 09 f6\n c1 01 75 7b 66 90 48 89 c1 48 8b 09 f6 c1 01 74 74 5d c3 eb 9e <0f> 0b\n 48 ba ff ff ff ff 03 00 00 00 eb ae a9 ff 0f 00 00 75 13 48\n RSP: 0018:ffffa59e73fabb80 EFLAGS: 00010282\n RAX: 00000000ffffffe8 RBX: 0c00000000000000 RCX: ffffcd5440000000\n RDX: 1ffffffffff7a80a RSI: 0000000000000000 RDI: 0c0000000000042b\n RBP: ffffa59e73fabb80 R08: ffff9965ca6e8bb8 R09: 0000000000000000\n R10: ffffffffa5a2f62d R11: 0000030b372e9fff R12: ffff997b79db5738\n R13: 000000000000042b R14: 0c0000000000042b R15: 1ffffffffff7a80a\n FS: 00007f549d1bb700(0000) GS:ffff99d3cf680000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000440d035b3180 CR3: 0000002243176004 CR4: 00000000003706e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n <TASK>\n change_pte_range+0x36e/0x880\n change_p4d_range+0x2e8/0x670\n change_protection_range+0x14e/0x2c0\n mprotect_fixup+0x1ee/0x330\n do_mprotect_pkey+0x34c/0x440\n __x64_sys_mprotect+0x1d/0x30\n\nIt triggers because pfn_swap_entry_to_page() could be called upon e.g. a\ngenuine swap entry.\n\nFix it by only calling it when it's a write migration entry where the page*\nis used.\n\n[1] https://lore.kernel.org/lkml/CAOUHufaVC2Za-p8m0aiHw6YkheDcrO-C3wRGixwDS32VTS+k1w@mail.gmail.com/"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/mprotect.c"], "versions": [{"version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "lessThan": "5fcf81e308d1f4ae95f31690d2a80b7061385ff9", "status": "affected", "versionType": "git"}, {"version": "6c287605fd56466e645693eff3ae7c08fba56e0a", "lessThan": "3d2f78f08cd8388035ac375e731ec1ac1b79b09d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/mprotect.c"], "versions": [{"version": "5.19", "status": "affected"}, {"version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.6", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "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": "5.19", "versionEndExcluding": "5.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5fcf81e308d1f4ae95f31690d2a80b7061385ff9"}, {"url": "https://git.kernel.org/stable/c/3d2f78f08cd8388035ac375e731ec1ac1b79b09d"}], "title": "mm/mprotect: only reference swap pfn page if type match", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mprotect: only reference swap pfn page if type match\n\nYu Zhao reported a bug after the commit \"mm/swap: Add swp_offset_pfn() to\nfetch PFN from swap entry\" added a check in swp_offset_pfn() for swap type [1]:\n\n kernel BUG at include/linux/swapops.h:117!\n CPU: 46 PID: 5245 Comm: EventManager_De Tainted: G S O L 6.0.0-dbg-DEV #2\n RIP: 0010:pfn_swap_entry_to_page+0x72/0xf0\n Code: c6 48 8b 36 48 83 fe ff 74 53 48 01 d1 48 83 c1 08 48 8b 09 f6\n c1 01 75 7b 66 90 48 89 c1 48 8b 09 f6 c1 01 74 74 5d c3 eb 9e <0f> 0b\n 48 ba ff ff ff ff 03 00 00 00 eb ae a9 ff 0f 00 00 75 13 48\n RSP: 0018:ffffa59e73fabb80 EFLAGS: 00010282\n RAX: 00000000ffffffe8 RBX: 0c00000000000000 RCX: ffffcd5440000000\n RDX: 1ffffffffff7a80a RSI: 0000000000000000 RDI: 0c0000000000042b\n RBP: ffffa59e73fabb80 R08: ffff9965ca6e8bb8 R09: 0000000000000000\n R10: ffffffffa5a2f62d R11: 0000030b372e9fff R12: ffff997b79db5738\n R13: 000000000000042b R14: 0c0000000000042b R15: 1ffffffffff7a80a\n FS: 00007f549d1bb700(0000) GS:ffff99d3cf680000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000440d035b3180 CR3: 0000002243176004 CR4: 00000000003706e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n <TASK>\n change_pte_range+0x36e/0x880\n change_p4d_range+0x2e8/0x670\n change_protection_range+0x14e/0x2c0\n mprotect_fixup+0x1ee/0x330\n do_mprotect_pkey+0x34c/0x440\n __x64_sys_mprotect+0x1d/0x30\n\nIt triggers because pfn_swap_entry_to_page() could be called upon e.g. a\ngenuine swap entry.\n\nFix it by only calling it when it's a write migration entry where the page*\nis used.\n\n[1] https://lore.kernel.org/lkml/CAOUHufaVC2Za-p8m0aiHw6YkheDcrO-C3wRGixwDS32VTS+k1w@mail.gmail.com/"}], "id": "CVE-2022-49992", "lastModified": "2025-06-18T13:46:52.973", "metrics": {}, "published": "2025-06-18T11:15:26.870", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3d2f78f08cd8388035ac375e731ec1ac1b79b09d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5fcf81e308d1f4ae95f31690d2a80b7061385ff9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: mm/mprotect: only reference swap pfn page if type match", "id": "2373483", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373483"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/mprotect: only reference swap pfn page if type match\nYu Zhao reported a bug after the commit \"mm/swap: Add swp_offset_pfn() to\nfetch PFN from swap entry\" added a check in swp_offset_pfn() for swap type [1]:\nkernel BUG at include/linux/swapops.h:117!\nCPU: 46 PID: 5245 Comm: EventManager_De Tainted: G S O L 6.0.0-dbg-DEV #2\nRIP: 0010:pfn_swap_entry_to_page+0x72/0xf0\nCode: c6 48 8b 36 48 83 fe ff 74 53 48 01 d1 48 83 c1 08 48 8b 09 f6\nc1 01 75 7b 66 90 48 89 c1 48 8b 09 f6 c1 01 74 74 5d c3 eb 9e <0f> 0b\n48 ba ff ff ff ff 03 00 00 00 eb ae a9 ff 0f 00 00 75 13 48\nRSP: 0018:ffffa59e73fabb80 EFLAGS: 00010282\nRAX: 00000000ffffffe8 RBX: 0c00000000000000 RCX: ffffcd5440000000\nRDX: 1ffffffffff7a80a RSI: 0000000000000000 RDI: 0c0000000000042b\nRBP: ffffa59e73fabb80 R08: ffff9965ca6e8bb8 R09: 0000000000000000\nR10: ffffffffa5a2f62d R11: 0000030b372e9fff R12: ffff997b79db5738\nR13: 000000000000042b R14: 0c0000000000042b R15: 1ffffffffff7a80a\nFS: 00007f549d1bb700(0000) GS:ffff99d3cf680000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000440d035b3180 CR3: 0000002243176004 CR4: 00000000003706e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n<TASK>\nchange_pte_range+0x36e/0x880\nchange_p4d_range+0x2e8/0x670\nchange_protection_range+0x14e/0x2c0\nmprotect_fixup+0x1ee/0x330\ndo_mprotect_pkey+0x34c/0x440\n__x64_sys_mprotect+0x1d/0x30\nIt triggers because pfn_swap_entry_to_page() could be called upon e.g. a\ngenuine swap entry.\nFix it by only calling it when it's a write migration entry where the page*\nis used.\n[1] https://lore.kernel.org/lkml/CAOUHufaVC2Za-p8m0aiHw6YkheDcrO-C3wRGixwDS32VTS+k1w@mail.gmail.com/"], "name": "CVE-2022-49992", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49992\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49992\nhttps://lore.kernel.org/linux-cve-announce/2025061825-CVE-2022-49992-c5f0@gregkh/T"], "threat_severity": "Moderate"}