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CVE-2026-64459

In the Linux kernel, the following vulnerability has been resolved: tcp: restore RCU grace period in tcp_ao_destroy_sock Commit 51e547e8c89c ("tcp: Free TCP-AO/TCP-MD5 info/keys without RCU") removed the call_rcu() callback from tcp_ao_destroy_sock(), arguing that "the destruction of info/keys is delayed until the socket destructor" and therefore "no one can discover it anymore". That argument does not hold for the call site in tcp_connect() (net/ipv4/tcp_output.c:4327-4332). At that point th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:85573f62d235eef16d6010b56463274e6660ca91f75a03b0a3baed284020b17a
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":["include/net/tcp_ao.h","net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/tcp_ao.h","net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"657646c08c94ef7b9dbe468fe7828032216f9841","status":"affected","version":"51e547e8c89c661f6fbede4a28b1d33b13625683","versionType":"git"},{"lessThan":"4caf12c778fed3dc3824cf36263be5e2c491fbd0","status":"affected","version":"51e547e8c89c661f6fbede4a28b1d33b13625683","versionType":"git"},{"lessThan":"8bc4d43bccbd60efe85d0a44d5bf41762f2f0c30","status":"affected","version":"51e54…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/tcp_ao.h","net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/tcp_ao.h","net/ipv4/tcp_ao.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"657646c08c94ef7b9dbe468fe7828032216f9841","status":"affected","version":"51e547e8c89c661f6fbede4a28b1d33b13625683","versionType":"git"},{"lessThan":"4caf12c778fed3dc3824cf36263be5e2c491fbd0","status":"affected","version":"51e547e8c89c661f6fbede4a28b1d33b13625683","versionType":"git"},{"lessThan":"8bc4d43bccbd60efe85d0a44d5bf41762f2f0c30","status":"affected","version":"51e54…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/4caf12c778fed3dc3824cf36263be5e2c491fbd0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/657646c08c94ef7b9dbe468fe7828032216f9841"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/8bc4d43bccbd60efe85d0a44d5bf41762f2f0c30"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:65a4a447f29ce5ca1e9248b45a3aa119c24f7c83fe6ed11a413f3dc5cbe4e738 · sha256:4d14344f9398a49f… · /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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