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CVE-2026-45951

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a potential use-after-free of BTF object Refcounting in the check_pseudo_btf_id() function is incorrect: the __check_pseudo_btf_id() function might get called with a zero refcounted btf. Fix this, and patch related code accordingly. v3: rephrase a comment (AI) v2: fix a refcount leak introduced in v1 (AI)
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b3b0ea25a5cfba49b1e401753f8a609c09c2ba1ca78825e495af392805c8ae58
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"eac65c272f3b49021a843cba5107d63627395e0e","status":"affected","version":"76145f7255326761dafb76721a785799d8a00d5f","versionType":"git"},{"lessThan":"9ff46ffeecdb1802d6e26183177935b948a12e7f","status":"affected","version":"76145f7255326761dafb76721a785799d8a00d5f","versionType":"git"},{"lessThan":"ccd2d799ed4467c07f5ee18c2f5c59bcc990822c","status":"affected","version":"76145f7255326761dafb7672…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"eac65c272f3b49021a843cba5107d63627395e0e","status":"affected","version":"76145f7255326761dafb76721a785799d8a00d5f","versionType":"git"},{"lessThan":"9ff46ffeecdb1802d6e26183177935b948a12e7f","status":"affected","version":"76145f7255326761dafb76721a785799d8a00d5f","versionType":"git"},{"lessThan":"ccd2d799ed4467c07f5ee18c2f5c59bcc990822c","status":"affected","version":"76145f7255326761dafb7672…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.14","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/9ff46ffeecdb1802d6e26183177935b948a12e7f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/ccd2d799ed4467c07f5ee18c2f5c59bcc990822c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/eac65c272f3b49021a843cba5107d63627395e0e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:70d7d2bbb7c1ebbeff80653613f7e0042a4cd8f67affd6f00f63329f5762f574 · sha256:654964020e8504de… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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