{"id":"CVE-2026-98244","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clear free space tree creation state on rebuild failure\n\nbtrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE\nbefore rebuilding the free space …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clear free space tree creation state on rebuild failure\n\nbtrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE\nbefore rebuilding the free space …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 882af9f13e830c0a4ef696bb72cd5998a5067a93 < a32bedab8ece9d1f90a1476a5b486a1804dc78ba","Linux >= 882af9f13e830c0a4ef696bb72cd5998a5067a93 < b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81","Linux >= 882af9f13e830c0a4ef696bb72cd5998a5067a93 < 3565893cc72cdf6b795cf6a33e7ff9605322334d","Linux 6.14"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:12.510","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98244","references":[{"url":"https://git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.432Z","slug":"CVE-2026-98244","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clear free space tree creation state on rebuild failure\n\nbtrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE\nbefore rebuilding the free space tree.  Several error paths return\nwithout clearing this flag.\n\nThe transaction restart failure path can leave the flag set on a live\nfilesystem, causing delayed reference processing to be skipped. Clear it\non all free space tree rebuild failure paths. Keep\nBTRFS_FS_FREE_SPACE_TREE_UNTRUSTED set, since a failed rebuild leaves\nthe free space tree untrusted. Callers must fall back to extent-tree\ncaching.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}