{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-37918", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.968Z", "datePublished": "2025-05-20T15:21:48.473Z", "dateUpdated": "2025-05-26T05:23:41.659Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-26T05:23:41.659Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()\n\nA NULL pointer dereference can occur in skb_dequeue() when processing a\nQCA firmware crash dump on WCN7851 (0489:e0f3).\n\n[ 93.672166] Bluetooth: hci0: ACL memdump size(589824)\n\n[ 93.672475] BUG: kernel NULL pointer dereference, address: 0000000000000008\n[ 93.672517] Workqueue: hci0 hci_devcd_rx [bluetooth]\n[ 93.672598] RIP: 0010:skb_dequeue+0x50/0x80\n\nThe issue stems from handle_dump_pkt_qca() returning 0 even when a dump\npacket is successfully processed. This is because it incorrectly\nforwards the return value of hci_devcd_init() (which returns 0 on\nsuccess). As a result, the caller (btusb_recv_acl_qca() or\nbtusb_recv_evt_qca()) assumes the packet was not handled and passes it\nto hci_recv_frame(), leading to premature kfree() of the skb.\n\nLater, hci_devcd_rx() attempts to dequeue the same skb from the dump\nqueue, resulting in a NULL pointer dereference.\n\nFix this by:\n1. Making handle_dump_pkt_qca() return 0 on success and negative errno\n on failure, consistent with kernel conventions.\n2. Splitting dump packet detection into separate functions for ACL\n and event packets for better structure and readability.\n\nThis ensures dump packets are properly identified and consumed, avoiding\ndouble handling and preventing NULL pointer access."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bluetooth/btusb.c"], "versions": [{"version": "20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6", "lessThan": "2e8d44ebaa7babdd5c5ab50ca275826e241920d6", "status": "affected", "versionType": "git"}, {"version": "20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6", "lessThan": "b70b41591ec48c78ec6a885e1f57bfc4029e5e13", "status": "affected", "versionType": "git"}, {"version": "20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6", "lessThan": "8563d9fabd8a4b726ba7acab4737c438bf11a059", "status": "affected", "versionType": "git"}, {"version": "20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6", "lessThan": "0317b033abcd1d8dd2798f0e2de5e84543d0bd22", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bluetooth/btusb.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.90", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.28", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.6", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "6.4", "versionEndExcluding": "6.6.90"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.28"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.14.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2e8d44ebaa7babdd5c5ab50ca275826e241920d6"}, {"url": "https://git.kernel.org/stable/c/b70b41591ec48c78ec6a885e1f57bfc4029e5e13"}, {"url": "https://git.kernel.org/stable/c/8563d9fabd8a4b726ba7acab4737c438bf11a059"}, {"url": "https://git.kernel.org/stable/c/0317b033abcd1d8dd2798f0e2de5e84543d0bd22"}], "title": "Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()\n\nA NULL pointer dereference can occur in skb_dequeue() when processing a\nQCA firmware crash dump on WCN7851 (0489:e0f3).\n\n[ 93.672166] Bluetooth: hci0: ACL memdump size(589824)\n\n[ 93.672475] BUG: kernel NULL pointer dereference, address: 0000000000000008\n[ 93.672517] Workqueue: hci0 hci_devcd_rx [bluetooth]\n[ 93.672598] RIP: 0010:skb_dequeue+0x50/0x80\n\nThe issue stems from handle_dump_pkt_qca() returning 0 even when a dump\npacket is successfully processed. This is because it incorrectly\nforwards the return value of hci_devcd_init() (which returns 0 on\nsuccess). As a result, the caller (btusb_recv_acl_qca() or\nbtusb_recv_evt_qca()) assumes the packet was not handled and passes it\nto hci_recv_frame(), leading to premature kfree() of the skb.\n\nLater, hci_devcd_rx() attempts to dequeue the same skb from the dump\nqueue, resulting in a NULL pointer dereference.\n\nFix this by:\n1. Making handle_dump_pkt_qca() return 0 on success and negative errno\n on failure, consistent with kernel conventions.\n2. Splitting dump packet detection into separate functions for ACL\n and event packets for better structure and readability.\n\nThis ensures dump packets are properly identified and consumed, avoiding\ndouble handling and preventing NULL pointer access."}], "id": "CVE-2025-37918", "lastModified": "2025-05-21T20:25:16.407", "metrics": {}, "published": "2025-05-20T16:15:28.393", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0317b033abcd1d8dd2798f0e2de5e84543d0bd22"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e8d44ebaa7babdd5c5ab50ca275826e241920d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8563d9fabd8a4b726ba7acab4737c438bf11a059"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b70b41591ec48c78ec6a885e1f57bfc4029e5e13"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()", "id": "2367533", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2367533"}, "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": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()\nA NULL pointer dereference can occur in skb_dequeue() when processing a\nQCA firmware crash dump on WCN7851 (0489:e0f3).\n[ 93.672166] Bluetooth: hci0: ACL memdump size(589824)\n[ 93.672475] BUG: kernel NULL pointer dereference, address: 0000000000000008\n[ 93.672517] Workqueue: hci0 hci_devcd_rx [bluetooth]\n[ 93.672598] RIP: 0010:skb_dequeue+0x50/0x80\nThe issue stems from handle_dump_pkt_qca() returning 0 even when a dump\npacket is successfully processed. This is because it incorrectly\nforwards the return value of hci_devcd_init() (which returns 0 on\nsuccess). As a result, the caller (btusb_recv_acl_qca() or\nbtusb_recv_evt_qca()) assumes the packet was not handled and passes it\nto hci_recv_frame(), leading to premature kfree() of the skb.\nLater, hci_devcd_rx() attempts to dequeue the same skb from the dump\nqueue, resulting in a NULL pointer dereference.\nFix this by:\n1. Making handle_dump_pkt_qca() return 0 on success and negative errno\non failure, consistent with kernel conventions.\n2. Splitting dump packet detection into separate functions for ACL\nand event packets for better structure and readability.\nThis ensures dump packets are properly identified and consumed, avoiding\ndouble handling and preventing NULL pointer access."], "name": "CVE-2025-37918", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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: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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-37918\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-37918\nhttps://lore.kernel.org/linux-cve-announce/2025052001-CVE-2025-37918-db24@gregkh/T"], "statement": "A vulnerability was discovered in the btusb driver when processing QCA crash dump packets on WCN7851 chipsets. An incorrect return value caused certain packets to be handled twice, resulting in a NULL pointer dereference in skb_dequeue(). Local attackers with low privileges could trigger this condition to cause a kernel crash, leading to denial of service (DoS).", "threat_severity": "Moderate"}