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CVE-2026-63828

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg()/sendto() with MSG_FASTOPEN is a combination of connect(2) and write(2): it opens the connection in the SYN. apparmor_socket_sendmsg() only checks AA_MAY_SEND, so a profile that grants send but denies connect lets a confined task open an outbound TCP/MPTCP connection that connect(2) would have refused, bypassing connect mediation. Mediate the implicit co
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f9442bdf07970870001dfdea956bd8d6470c40bb5ddb50547425e3ad135eac05
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":["security/apparmor/lsm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.6"},{"lessThan":"3.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessTha…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["security/apparmor/lsm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a16714e7cf2baa98ba2efddd5d6cbac641f4e76b","status":"affected","version":"cf60af03ca4e71134206809ea892e49b92a88896","versionType":"git"},{"lessThan":"20383429b56974507c465d016e5238b189f7a246","status":"affected","version":"cf60af03ca4e71134206809ea892e49b92a88896","versionType":"git"},{"lessThan":"7f57428ce00891d26b0f087ef754a4d820ec83aa","status":"affected","version":"cf60af03ca4e7113420680…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["security/apparmor/lsm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.6"},{"lessThan":"3.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessTha…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["security/apparmor/lsm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a16714e7cf2baa98ba2efddd5d6cbac641f4e76b","status":"affected","version":"cf60af03ca4e71134206809ea892e49b92a88896","versionType":"git"},{"lessThan":"20383429b56974507c465d016e5238b189f7a246","status":"affected","version":"cf60af03ca4e71134206809ea892e49b92a88896","versionType":"git"},{"lessThan":"7f57428ce00891d26b0f087ef754a4d820ec83aa","status":"affected","version":"cf60af03ca4e7113420680…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.4,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/07b71c342382b854ab8030b244aeab6a7228ad7d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/20383429b56974507c465d016e5238b189f7a246"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/45ebb934ea50b436ce49b2f159f090dab0d7fa28"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/4a69b83045d3195d5b9a9b053ad840ddb2998b4e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/4d587cd8a72155089a627130bbd4716ec0856e21"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/7f57428ce00891d26b0f087ef754a4d820ec83aa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/a16714e7cf2baa98ba2efddd5d6cbac641f4e76b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/faea60deaa05c76f0772650f42eafde12bd39d93"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:978920a95b3325823120b532b2e6318766cec6addd3a66c2c88cc3abaf30ab7d · sha256:85c14dadc87a7205… · /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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