CVE Explorer

CVE-2026-63796

In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject oversized group bitmap descriptors ocfs2_validate_gd_parent() only bounds bg_bits against the parent allocator's chain geometry. A malicious descriptor can still claim a bg_size/bg_bits pair that exceeds the bitmap bytes that physically fit in the group descriptor block, so later bitmap scans and bit updates can run past bg_bitmap. Add a physical-cap check based on ocfs2_group_bitmap_size() for the parent alloc

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:18cb1a7bfcd7e88e9d6c3090b2ab6f015999e5587b1da34931380730b9a3cdfb

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ocfs2/suballoc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"336340a0f8a141df8a4eb21a5a86f8ffb87769f6","status":"affected","version":"ccd979bdbce9fba8412beb3f1de68a9d0171b12c","versionType":"git"},{"lessThan":"296c6a42b1174395935ca4cfe8f393e37b698d54","status":"affected","version":"ccd979bdbce9fba8412beb3f1de68a9d0171b12c","versionType":"git"},{"lessThan":"d2cd59fa848f9f13796ef214d3b1b5ca9a3fe21e","status":"affected","version":"ccd979bdbce9fba8412beb3f1d…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ocfs2/suballoc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.16"},{"lessThan":"2.6.16","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"},{"lessT…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/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:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions

{"url":"https://git.kernel.org/stable/c/296c6a42b1174395935ca4cfe8f393e37b698d54"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/336340a0f8a141df8a4eb21a5a86f8ffb87769f6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/4cd57ebee395041099fcdfcabb00749ce38d8b27"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/8f9903b0cdbb3155a8899410330b4b4d583a7a5c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/99c21e7263248c3f084756bfae08163cc5d6c62f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/9bd541e09dffff27e5bec0f9f45b0228173a5375"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/c5a125eadba05ba421c4b55e68da22b4a40d32b4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/d2cd59fa848f9f13796ef214d3b1b5ca9a3fe21e"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:51be85e063feb1fee316d75fba303abfd57eb47a0c58dae845e198fc2e48dd14 · sha256:617a5c121b880f13… · /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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