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CVE-2026-63913

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check An unintended behavior in the TCP conntrack state machine allows a connection to be forced into the CLOSE state using an RST packet with an invalid sequence number. Specifically, after a SYN packet is observed, an RST with an invalid SEQ can transition the conntrack entry to TCP_CONNTRACK_CLOSE, regardless of whether the RST corresponds t
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6bbca40c00e5079bdf9c6a03d8c249c2512aacf1eb81652ff2727ecdf4decc36
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/netfilter/nf_conntrack_proto_tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.15"},{"lessThan":"2.6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_proto_tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2006979a15af5404bf932a325357683c0bac1656","status":"affected","version":"9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1","versionType":"git"},{"lessThan":"6476c17d536dbd321c073242e762ddb2713a1238","status":"affected","version":"9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1","versionType":"git"},{"lessThan":"f5547bebc416d56f56fb5b86dc20aabfa42165a0","status":"affected","version":"9fb9cbb…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_proto_tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.15"},{"lessThan":"2.6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_proto_tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2006979a15af5404bf932a325357683c0bac1656","status":"affected","version":"9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1","versionType":"git"},{"lessThan":"6476c17d536dbd321c073242e762ddb2713a1238","status":"affected","version":"9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1","versionType":"git"},{"lessThan":"f5547bebc416d56f56fb5b86dc20aabfa42165a0","status":"affected","version":"9fb9cbb…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/2006979a15af5404bf932a325357683c0bac1656"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/2bb6d82b586ea5a4cb73bbdd6b7432e96096bc77"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/6476c17d536dbd321c073242e762ddb2713a1238"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/b98ab51c45c5608a1c19ce7fd17a3032469bb83f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/bed6e04be8e6b9133d8b16d5a42d0e0ce674fa9a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/d67c6adee8d1b65330d0174c4c367faba14e80a8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/f206def4e86d810f927ba1d8e322ea72b29bce58"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/f5547bebc416d56f56fb5b86dc20aabfa42165a0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d34a0e6bdd2230ac4931f5b92a59eb9d25fa4228703238d5675243d9f3bfcd53 · sha256:8b395d65ee080342… · /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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