{"id":"CVE-2026-98081","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: finish active block group cleanup if call_zone_finish() fails\n\ndo_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing\nthe zones","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: finish active block group cleanup if call_zone_finish() fails\n\ndo_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing\nthe zones. If call…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= d70cbdda75da3f258118a558c087157e073229fb < 36b9cdab44848f25879ca625275c92b007f84653","Linux >= d70cbdda75da3f258118a558c087157e073229fb < 40370f02a1ca3760f8925ffcbe76eb4d91ea758d","Linux >= d70cbdda75da3f258118a558c087157e073229fb < e1b168a53174b385e3548bfbd079513b22ac240c","Linux >= d70cbdda75da3f258118a558c087157e073229fb < a18a6b93a2843b9d103d3456bbd4b3f90282a379","Linux 5.19"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:37.573","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98081","references":[{"url":"https://git.kernel.org/stable/c/36b9cdab44848f25879ca625275c92b007f84653","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/40370f02a1ca3760f8925ffcbe76eb4d91ea758d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a18a6b93a2843b9d103d3456bbd4b3f90282a379","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e1b168a53174b385e3548bfbd079513b22ac240c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.835Z","slug":"CVE-2026-98081","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: finish active block group cleanup if call_zone_finish() fails\n\ndo_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing\nthe zones. If call_zone_finish() then fails it returned early, leaving the\nnow inactive block group on fs_info->zone_active_bgs, leaking its\nreference, the BTRFS_FS_NEED_ZONE_FINISH waiters are never woken, and as\nits alloc_offset equals the zone capacity btrfs_zone_finish_one_bg() keeps\nselecting it, spinning btrfs_zoned_activate_one_bg().\n\nFall through to the cleanup on failure too and return the error, but keep\nthe block group read-only as its zones are left inconsistent.\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":[]}