{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-38473", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38473", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-07-28T11:21:34.880Z", "updatedAt": "2026-05-11T21:28:41.562Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Bluetooth: Fix null-ptr-deref in l2cap_sock_resume_cb()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix null-ptr-deref in l2cap_sock_resume_cb()\n\nsyzbot reported null-ptr-deref in l2cap_sock_resume_cb(). [0]\n\nl2cap_sock_resume_cb() has a similar problem that was fixed by commit\n1bff51ea59a9 (\"Bluetooth: fix use-after-free error in lock_sock_nested()\").\n\nSince both l2cap_sock_kill() and l2cap_sock_resume_cb() are executed\nunder l2cap_sock_resume_cb(), we can avoid the issue simply by checking\nif chan->data is NULL.\n\nLet's not access to the killed socket in l2cap_sock_resume_cb().\n\n[0]:\nBUG: KASAN: null-ptr-deref in instrument_atomic_write include/linux/instrumented.h:82 [inline]\nBUG: KASAN: null-ptr-deref in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]\nBUG: KASAN: null-ptr-deref in l2cap_sock_resume_cb+0xb4/0x17c net/bluetooth/l2cap_sock.c:1711\nWrite of size 8 at addr 0000000000000570 by task kworker/u9:0/52\n\nCPU: 1 UID: 0 PID: 52 Comm: kworker/u9:0 Not tainted 6.16.0-rc4-syzkaller-g7482bb149b9f #0 PREEMPT\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025\nWorkqueue: hci0 hci_rx_work\nCall trace:\n show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (C)\n __dump_stack+0x30/0x40 lib/dump_stack.c:94\n dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120\n print_report+0x58/0x84 mm/kasan/report.c:524\n kasan_report+0xb0/0x110 mm/kasan/report.c:634\n check_region_inline mm/kasan/generic.c:-1 [inline]\n kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189\n __kasan_check_write+0x20/0x30 mm/kasan/shadow.c:37\n instrument_atomic_write include/linux/instrumented.h:82 [inline]\n clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]\n l2cap_sock_resume_cb+0xb4/0x17c net/bluetooth/l2cap_sock.c:1711\n l2cap_security_cfm+0x524/0xea0 net/bluetooth/l2cap_core.c:7357\n hci_auth_cfm include/net/bluetooth/hci_core.h:2092 [inline]\n hci_auth_complete_evt+0x2e8/0xa4c net/bluetooth/hci_event.c:3514\n hci_event_func net/bluetooth/hci_event.c:7511 [inline]\n hci_event_packet+0x650/0xe9c net/bluetooth/hci_event.c:7565\n hci_rx_work+0x320/0xb18 net/bluetooth/hci_core.c:4070\n process_one_work+0x7e8/0x155c kernel/workqueue.c:3238\n process_scheduled_works kernel/workqueue.c:3321 [inline]\n worker_thread+0x958/0xed8 kernel/workqueue.c:3402\n kthread+0x5fc/0x75c kernel/kthread.c:464\n ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "262cd18f5f7ede6a586580cadc5d0799e52e2e7c" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "2b27b389006623673e8cfff4ce1e119cce640b05" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "3a4eca2a1859955c65f07a570156bd2d9048ce33" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "ac3a8147bb24314fb3e84986590148e79f9872ec" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "c4f16f6b071a74ac7eefe5c28985285cbbe2cd96" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "b97be7ee8a1cd96b89817cbd64a9f5cc16c17d08" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "6d63901dcd592a1e3f71d7c6d78f9be5e8d7eef0" }, { "version": "d97c899bde330cd1c76c3a162558177563a74362", "status": "affected", "versionType": "git", "lessThan": "a0075accbf0d76c2dad1ad3993d2e944505d99a0" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.13", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.13" }, { "version": "5.4.297", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.241", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.190", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.147", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.100", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.40", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.15.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.15.*" }, { "version": "6.16", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }