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CVE-2026-53389

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of key in del_async path In tcp_ao_delete_key(), the del_async path skips the current_key and rnext_key validity checks present in the synchronous path, assuming these pointers are always NULL on LISTEN sockets. However, if a key was added with set_current=1/set_rnext=1 while the socket was in CLOSE state, current_key and rnext_key will be non-NULL after listen() transitions the socket to LISTEN
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e0840acdb526312041f70da5a1182f97e6a8717f5a61e49632f824589f015ef2
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/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.7"},{"lessThan":"6.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.38","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.3","versionType":"semver"},{"lessThanOrEqual":…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6ce7ef41743740ce15c2061561b784148b565b3f","status":"affected","version":"d6732b95b6fbbc6d5bb9d2f809e275763640c4a2","versionType":"git"},{"lessThan":"e77fbefd1269b5c123e7c651a1ebdce1b87d19a0","status":"affected","version":"d6732b95b6fbbc6d5bb9d2f809e275763640c4a2","versionType":"git"},{"lessThan":"7ddc29a094d96e9b3aa280433c6dc443df9eabf2","status":"affected","version":"d6732b95b6fbbc6d5bb9d2f809e2…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.7"},{"lessThan":"6.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.38","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.3","versionType":"semver"},{"lessThanOrEqual":…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6ce7ef41743740ce15c2061561b784148b565b3f","status":"affected","version":"d6732b95b6fbbc6d5bb9d2f809e275763640c4a2","versionType":"git"},{"lessThan":"e77fbefd1269b5c123e7c651a1ebdce1b87d19a0","status":"affected","version":"d6732b95b6fbbc6d5bb9d2f809e275763640c4a2","versionType":"git"},{"lessThan":"7ddc29a094d96e9b3aa280433c6dc443df9eabf2","status":"affected","version":"d6732b95b6fbbc6d5bb9d2f809e2…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /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:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/5ba9950bc9078e19b69cca1e56d1553b125c6857"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/6ce7ef41743740ce15c2061561b784148b565b3f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/7ddc29a094d96e9b3aa280433c6dc443df9eabf2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/e77fbefd1269b5c123e7c651a1ebdce1b87d19a0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9be6f06cf1888bb7026d8f53074739d298072d8be38e3e5c1a8d5048332a167d · sha256:7b050fe0620ab906… · /containers/cna/references/1

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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