{"id":"CVE-2026-92485","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix WARNING in bpf_tracing_link_release\n\nThe trampoline could be corrupted by the blindly\n'tr->flags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier.\n\n1","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix WARNING in bpf_tracing_link_release\n\nThe trampoline could be corrupted by the blindly\n'tr->flags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier.\n\n1. A fexit attached…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 2b5dcb31a19a2e0acd869b12c9db9b2d696ef544 < 48a0209d8da0d90a7b0a0db19d1ff88027b13781","Linux >= 2b5dcb31a19a2e0acd869b12c9db9b2d696ef544 < 61aaa8782bec59ecffd22e030f54ef9351bcabf9","Linux 605c8d8f9966fcd2f0b858fabebe416fc83f2209","Linux 028480eaf2a1401e914a1fa1a4a21d877cf0ae30","Linux 8f873cc3f67f2257493063e57d0caf07ef889ee9","Linux >= 6.1.72 < 6.2","Linux >= 6.5.12 < 6.6","Linux >= 6.6.2 < 6.7","Linux 6.7"],"published":"2026-09-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:18:04.583","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92485","references":[{"url":"https://git.kernel.org/stable/c/094f0a895cf97a993d06d5dc4c12e7cb7da845a5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/48a0209d8da0d90a7b0a0db19d1ff88027b13781","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61aaa8782bec59ecffd22e030f54ef9351bcabf9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92485.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92485"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536187"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92485"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92485"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92485.mbox"},{"url":"https://git.kernel.org/stable/c/a5c6316052f0ff1467221ecf2996cbab0a496b1e"},{"url":"https://git.kernel.org/stable/c/d02035c5eb4955616efc5c6dbe3d98f19d798cb2"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00175,"epssPercentile":0.06966,"ingestedAt":"2026-09-17T16:21:47.787Z","cwe":["CWE-367"],"scores":{"nvd":7.8,"vendor":7,"cna":7.8},"slug":"CVE-2026-92485","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix WARNING in bpf_tracing_link_release\n\nThe trampoline could be corrupted by the blindly\n'tr->flags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier.\n\n1. A fexit attached to a tail_call_reachable prog. 'tr->flags' became\n   'BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_TAIL_CALL_CTX'. And, the\n   trampoline would poke the target prog's nop insn using jmp insn instead\n   of call insn.\n2. Another fexit loaded with the same tail_call_reachable prog target.\n   'tr->flags' became 'BPF_TRAMP_F_TAIL_CALL_CTX'.\n3. Close the first fexit link. Due to no BPF_TRAMP_F_CALL_ORIG in\n   'tr->flags', the trampoline will fail to restore the prog's nop insn\n   using call insn.\n\n[    3.410719] WARNING: kernel/bpf/syscall.c:3551 at bpf_tracing_link_release+0x53/0x60, CPU#1: test_progs/98\n...\n[    3.428793]  bpf_link_free+0x58/0x130\n[    3.429293]  bpf_link_release+0x23/0x30\n\nFix the warning by updating 'tr->flags' with '|=' and lock.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92485.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207327,"id":"CVE-2026-92485","ts":1789757340865,"field":"cvss","old":null,"new":"7.8"},{"seq":207326,"id":"CVE-2026-92485","ts":1789757340865,"field":"severity","old":"none","new":"high"}]}