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CVE-2026-63979

In the Linux kernel, the following vulnerability has been resolved: net/handshake: hand off the pinned file reference to accept_doit handshake_req_next() removes the request from the per-net pending list and drops hn_lock before handshake_nl_accept_doit() reads req->hr_sk->sk_socket and dereferences sock->file (once in FD_PREPARE() and again in get_file()). In that window a consumer running tls_handshake_cancel() followed by sockfd_put() (svc_sock_free) or __fput_sync() (xs_reset_transport) r
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:818da76af9c401de5f3c0cf0e241568d7bf47a7f46e36a4ec3bffa31f2282e2f
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":["net/handshake/handshake-test.c","net/handshake/netlink.c","net/handshake/request.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c06876d4fac38f35820946ee3b1be7d7da799cd4","status":"affected","version":"3b3009ea8abb713b022d94fba95ec270cf6e7eae","versionType":"git"},{"lessThan":"f4251190e58b209999c1ba9e6d2976136a1be055","status":"affected","version":"3b3009ea8abb713b022d94fba95ec270cf6e7eae","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/handshake/handshake-test.c","net/handshake/netlink.c","net/handshake/request.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/handshake/handshake-test.c","net/handshake/netlink.c","net/handshake/request.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c06876d4fac38f35820946ee3b1be7d7da799cd4","status":"affected","version":"3b3009ea8abb713b022d94fba95ec270cf6e7eae","versionType":"git"},{"lessThan":"f4251190e58b209999c1ba9e6d2976136a1be055","status":"affected","version":"3b3009ea8abb713b022d94fba95ec270cf6e7eae","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/handshake/handshake-test.c","net/handshake/netlink.c","net/handshake/request.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /containers/cna/affected/1

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:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/c06876d4fac38f35820946ee3b1be7d7da799cd4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/f4251190e58b209999c1ba9e6d2976136a1be055"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:783e146bfe52d80aed93290c4ad9bafb9c2cae4f7c138f0126662fd4abef0bc0 · sha256:d16ab2d1b49bf9a8… · /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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