btrfs: clear free space tree creation state on rebuild failure

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Summary

CVECVE-2026-98244
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 09:18:12 UTC
Updated2026-10-06 09:18:12 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: btrfs: clear free space tree creation state on rebuild failure btrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE before rebuilding the free space tree. Several error paths return without clearing this flag. The transaction restart failure path can leave the flag set on a live filesystem, causing delayed reference processing to be skipped. Clear it on all free space tree rebuild failure paths. Keep BTRFS_FS_FREE_SPACE_TREE_UNTRUSTED set, since a failed rebuild leaves the free space tree untrusted. Callers must fall back to extent-tree caching.

Risk And Classification

EPSS: 0.002060000 probability, percentile 0.097590000 (date 2026-10-06)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 882af9f13e830c0a4ef696bb72cd5998a5067a93 a32bedab8ece9d1f90a1476a5b486a1804dc78ba git Not specified
CNA Linux Linux affected 882af9f13e830c0a4ef696bb72cd5998a5067a93 b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81 git Not specified
CNA Linux Linux affected 882af9f13e830c0a4ef696bb72cd5998a5067a93 3565893cc72cdf6b795cf6a33e7ff9605322334d git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.54 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.8 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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