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CVE-2026-63814

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fs_acl_from_disk() f2fs_acl_count() only validates the aggregate ACL xattr length. A malformed ACL can still place ACL_USER or ACL_GROUP in a slot that only contains struct f2fs_acl_entry_short bytes, and f2fs_acl_from_disk() then reads entry->e_id before verifying that a full entry fits. Require a short entry before reading e_tag and e_perm, and require a full entry before reading e_id for
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f9619eb84878d294972cab8dc975bc90bffb2fd9be904caebf3b66cee852d4c7
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":["fs/f2fs/acl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.8"},{"lessThan":"3.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.260","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.211","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessThanOrEqual":…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/f2fs/acl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"733cd8474e6d763d75ed96f3f2b98a25480cf2b9","status":"affected","version":"af48b85b8cd3fbb12c9b6759c16db6d69c0b03da","versionType":"git"},{"lessThan":"4e2a96ec7236e248e706850568e0a925fd21b588","status":"affected","version":"af48b85b8cd3fbb12c9b6759c16db6d69c0b03da","versionType":"git"},{"lessThan":"442ca20c54038e2400cf28aaa944cf1de2c8e65d","status":"affected","version":"af48b85b8cd3fbb12c9b6759c16db6d6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/f2fs/acl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.8"},{"lessThan":"3.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.260","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.211","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessThanOrEqual":…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/f2fs/acl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"733cd8474e6d763d75ed96f3f2b98a25480cf2b9","status":"affected","version":"af48b85b8cd3fbb12c9b6759c16db6d69c0b03da","versionType":"git"},{"lessThan":"4e2a96ec7236e248e706850568e0a925fd21b588","status":"affected","version":"af48b85b8cd3fbb12c9b6759c16db6d69c0b03da","versionType":"git"},{"lessThan":"442ca20c54038e2400cf28aaa944cf1de2c8e65d","status":"affected","version":"af48b85b8cd3fbb12c9b6759c16db6d6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /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:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/1ddf3fd21c4c652f9cab5552515c04a166662306"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/442ca20c54038e2400cf28aaa944cf1de2c8e65d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/4e2a96ec7236e248e706850568e0a925fd21b588"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/5d8a39649947a4e86c8fbc682d7fc0041b8d109a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/733cd8474e6d763d75ed96f3f2b98a25480cf2b9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/aba4f94ac1832c7299c33e1b4fe5f87eef6dc8f1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/c4810ada31e80cbe4011467c4f3b1e93f94134f3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/ff83de56882cb8466184d322abece2589258ca56"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:875da2d84989aede53e8a4ccb9b0fec212acbc6fd12d54343ce3f727b1a208de · sha256:3251256492eb8482… · /containers/cna/references/5

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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