Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: finish active block group cleanup if call_zone_finish() fails do_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing the zones. If call_zone_finish() then fails it returned early, leaving the now inactive block group on fs_info->zone_active_bgs, leaking its reference, the BTRFS_FS_NEED_ZONE_FINISH waiters are never woken, and as its alloc_offset equals the zone capacity btrfs_zone_finish_one_bg() keeps selecting it, spinning btrfs_zoned_activate_one_bg(). Fall through to the cleanup on failure too and return the error, but keep the block group read-only as its zones are left inconsistent.
References
- https://git.kernel.org/stable/c/36b9cdab44848f25879ca625275c92b007f84653
- https://git.kernel.org/stable/c/40370f02a1ca3760f8925ffcbe76eb4d91ea758d
- https://git.kernel.org/stable/c/a18a6b93a2843b9d103d3456bbd4b3f90282a379
- https://git.kernel.org/stable/c/e1b168a53174b385e3548bfbd079513b22ac240c
FAQ
What is CVE-2026-98081?
CVE-2026-98081 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: finish active block group cleanup if call_zone_finish() fails do_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIV...
How severe is CVE-2026-98081?
CVSS scoring is not yet available for CVE-2026-98081. Check NVD for updates.
Is there a patch for CVE-2026-98081?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.