bpf: Fix WARNING in bpf_tracing_link_release
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix WARNING in bpf_tracing_link_release The trampoline could be corrupted by the blindly 'tr->flags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier. 1. A fexit attached to a tail_call_reachable prog. 'tr->flags' became 'BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_TAIL_CALL_CTX'. And, the trampoline would poke the target prog's nop insn using jmp insn instead of call insn. 2. Another fexit loaded with the same tail_call_reachable prog target. 'tr->flags' became 'BPF_TRAMP_F_TAIL_CALL_CTX'. 3. Close the first fexit link. Due to no BPF_TRAMP_F_CALL_ORIG in 'tr->flags', the trampoline will fail to restore the prog's nop insn using call insn. [ 3.410719] WARNING: kernel/bpf/syscall.c:3551 at bpf_tracing_link_release+0x53/0x60, CPU#1: test_progs/98 ... [ 3.428793] bpf_link_free+0x58/0x130 [ 3.429293] bpf_link_release+0x23/0x30 Fix the warning by updating 'tr->flags' with '|=' and lock.
CVE-2026-92485
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-92485
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8f873cc3f67f2257493063e57d0caf07ef889ee9",
"lessThan": "a5c6316052f0ff1467221ecf2996cbab0a496b1e",
"versionType": "git"
},
{
"status": "affected",
"version": "2b5dcb31a19a2e0acd869b12c9db9b2d696ef544",
"lessThan": "d02035c5eb4955616efc5c6dbe3d98f19d798cb2",
"versionType": "git"
},
{
"status": "affected",
"version": "2b5dcb31a19a2e0acd869b12c9db9b2d696ef544",
"lessThan": "094f0a895cf97a993d06d5dc4c12e7cb7da845a5",
"versionType": "git"
},
{
"status": "affected",
"version": "2b5dcb31a19a2e0acd869b12c9db9b2d696ef544",
"lessThan": "48a0209d8da0d90a7b0a0db19d1ff88027b13781",
"versionType": "git"
},
{
"status": "affected",
"version": "2b5dcb31a19a2e0acd869b12c9db9b2d696ef544",
"lessThan": "61aaa8782bec59ecffd22e030f54ef9351bcabf9",
"versionType": "git"
},
{
"status": "affected",
"version": "605c8d8f9966fcd2f0b858fabebe416fc83f2209",
"versionType": "git"
},
{
"status": "affected",
"version": "028480eaf2a1401e914a1fa1a4a21d877cf0ae30",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.2",
"lessThan": "6.6.160",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.72",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.5.12",
"lessThan": "6.6",
"versionType": "semver"
}
],
"programFiles": [
"include/linux/bpf.h",
"kernel/bpf/trampoline.c",
"kernel/bpf/verifier.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/linux/bpf.h",
"kernel/bpf/trampoline.c",
"kernel/bpf/verifier.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-92485
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48699 · Revision 1
- Added to Heist Feed
- Publisher date