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CVE-2026-43020

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8ea0301a505ed12c5bd9f07fa13ca8368f7641cb4888a8ff81aed1acfda62d4b
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":"affected","product":"Linux","programFiles":["net/bluetooth/mgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.4"},{"lessThan":"3.4","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":"6.1.168","versionType":"semver"},{"lessThanOr…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/mgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0f37d1e65c6d71ad94ccfb5c602163c525db789d","status":"affected","version":"346af67b8d116f01ef696fd47959a55deb2db8b6","versionType":"git"},{"lessThan":"257cdb960d8ff6d60bb6461b03c814b6cf0c9e64","status":"affected","version":"346af67b8d116f01ef696fd47959a55deb2db8b6","versionType":"git"},{"lessThan":"c34577f517b556fb6ca173d45bf7e766ae2564ce","status":"affected","version":"346af67b8d116f01ef696fd47…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/mgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.4"},{"lessThan":"3.4","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":"6.1.168","versionType":"semver"},{"lessThanOr…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/mgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0f37d1e65c6d71ad94ccfb5c602163c525db789d","status":"affected","version":"346af67b8d116f01ef696fd47959a55deb2db8b6","versionType":"git"},{"lessThan":"257cdb960d8ff6d60bb6461b03c814b6cf0c9e64","status":"affected","version":"346af67b8d116f01ef696fd47959a55deb2db8b6","versionType":"git"},{"lessThan":"c34577f517b556fb6ca173d45bf7e766ae2564ce","status":"affected","version":"346af67b8d116f01ef696fd47…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/affected/0

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/0f37d1e65c6d71ad94ccfb5c602163c525db789d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/257cdb960d8ff6d60bb6461b03c814b6cf0c9e64"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/82f342b3b006ca1d65f4890c05f2ec32fcb808b6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/b8dbe9648d69059cfe3a28917bfbf7e61efd7f15"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/c34577f517b556fb6ca173d45bf7e766ae2564ce"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/f71695e81f4cb428f3c7e2138eae88199005b52c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e240f6c332c7ec44d38a00476163f923e93e72a8ac83fb3512e7b6e6ddc9b023 · sha256:a97f1e891c0a1fed… · /containers/cna/references/3

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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