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CVE-2026-23407

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix missing bounds check on DEFAULT table in verify_dfa() The verify_dfa() function only checks DEFAULT_TABLE bounds when the state is not differentially encoded. When the verification loop traverses the differential encoding chain, it reads k = DEFAULT_TABLE[j] and uses k as an array index without validation. A malformed DFA with DEFAULT_TABLE[j] >= state_count, therefore, causes both out-of-bounds reads and writes
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a57ffb15fda246635a8d06670372471fd752324a369722d6a4278278a512730b
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":["security/apparmor/match.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"555829fd91eaf0711e369b0a92aecb0f0aa3281f","status":"affected","version":"031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3","versionType":"git"},{"lessThan":"a75e12ca90c9e70ba10fee1be2f63cdd63d91a7c","status":"affected","version":"031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3","versionType":"git"},{"lessThan":"22094c996968a7c5b59cd3fc9fcbdfdd46d02fec","status":"affected","version":"031dcc8f4e84fea37dc6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["security/apparmor/match.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.17"},{"lessThan":"4.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.169","versionType":"semver"},{"les…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["security/apparmor/match.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"555829fd91eaf0711e369b0a92aecb0f0aa3281f","status":"affected","version":"031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3","versionType":"git"},{"lessThan":"a75e12ca90c9e70ba10fee1be2f63cdd63d91a7c","status":"affected","version":"031dcc8f4e84fea37dc6f78fdc7288aa7f8386c3","versionType":"git"},{"lessThan":"22094c996968a7c5b59cd3fc9fcbdfdd46d02fec","status":"affected","version":"031dcc8f4e84fea37dc6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["security/apparmor/match.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.17"},{"lessThan":"4.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.169","versionType":"semver"},{"les…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /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:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/22094c996968a7c5b59cd3fc9fcbdfdd46d02fec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/555829fd91eaf0711e369b0a92aecb0f0aa3281f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/5a68e46dfe0c8c8ffc6f425ebc4cae6238566ecc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/76b4d36c5122866452d34d8f79985e191f9c3831"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/7c7cf05e0606f554c467e3a4dc49e2e578a755b4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/a75e12ca90c9e70ba10fee1be2f63cdd63d91a7c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d352873bbefa7eb39995239d0b44ccdf8aaa79a4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/f39e126e56c6ec1930fae51ad6bca3dae2a4c3ed"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:03606c2eb43b73c41249d1d2abab46f28785650e26dbd0000e61b987f531536f · sha256:f4cb017e93a5d672… · /containers/cna/references/6

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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