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CVE-2026-31413

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix unsound scalar forking in maybe_fork_scalars() for BPF_OR maybe_fork_scalars() is called for both BPF_AND and BPF_OR when the source operand is a constant. When dst has signed range [-1, 0], it forks the verifier state: the pushed path gets dst = 0, the current path gets dst = -1. For BPF_AND this is correct: 0 & K == 0. For BPF_OR this is wrong: 0 | K == K, not 0. The pushed path therefore tracks dst as 0 when
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d984ec5f93e12ea38a3c7107855b650b214d913e01e7b2cd45f3813d3aff5897
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":"6.12.80","status":"affected","version":"6.12.75","versionType":"semver"},{"lessThan":"6.18.21","status":"affected","version":"6.18.16","versionType":"semver"},{"lessThan":"6.19.11","status":"affected","version":"6.19.6","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/affected/1

{"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":"342aa1ee995ef5bbf876096dc3a5e51218d76fa4","status":"affected","version":"dea9989a3f3961faede93752cd81eb5a9514d911","versionType":"git"},{"lessThan":"58bd87d0e69204dbd739e4387a1edb0c4b1644e7","status":"affected","version":"4c122e8ae14950cf6b59d208fc5160f7c601e746","versionType":"git"},{"lessThan":"d13281ae7ea8902b21d99d10a2c8caf0bdec0455","status":"affected","version":"e52567173ba86dbffb990595…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/affected/0

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":"6.12.80","status":"affected","version":"6.12.75","versionType":"semver"},{"lessThan":"6.18.21","status":"affected","version":"6.18.16","versionType":"semver"},{"lessThan":"6.19.11","status":"affected","version":"6.19.6","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/affected/1
{"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":"342aa1ee995ef5bbf876096dc3a5e51218d76fa4","status":"affected","version":"dea9989a3f3961faede93752cd81eb5a9514d911","versionType":"git"},{"lessThan":"58bd87d0e69204dbd739e4387a1edb0c4b1644e7","status":"affected","version":"4c122e8ae14950cf6b59d208fc5160f7c601e746","versionType":"git"},{"lessThan":"d13281ae7ea8902b21d99d10a2c8caf0bdec0455","status":"affected","version":"e52567173ba86dbffb990595…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/affected/0

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:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/342aa1ee995ef5bbf876096dc3a5e51218d76fa4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/58bd87d0e69204dbd739e4387a1edb0c4b1644e7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/c845894ebd6fb43226b3118d6b017942550910c5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/d13281ae7ea8902b21d99d10a2c8caf0bdec0455"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0ca393690a99900c50b0bbc8d98afb7f7e7862e6463a65dc434406ef2be3f72b · sha256:06ab9987c4063380… · /containers/cna/references/2

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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