CVE-2026-98244

Summary

In 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux882af9f13e830c0a4ef696bb72cd5998a5067a93 < a32bedab8ece9d1f90a1476a5b486a1804dc78baaffected
LinuxLinux882af9f13e830c0a4ef696bb72cd5998a5067a93 < b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81affected
LinuxLinux882af9f13e830c0a4ef696bb72cd5998a5067a93 < 3565893cc72cdf6b795cf6a33e7ff9605322334daffected
LinuxLinux6.14affected
LinuxLinux0 < 6.14unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References