CVE-2026-98244
kernel: btrfs: clear free space tree creation state on rebuild failure
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 6, 2026
Updated · October 11, 2026
Description
A flaw was found in the Linux kernel's Btrfs file system. When an error occurs while rebuilding the free space tree, the kernel fails to properly reset an internal state flag on failure paths. A local user could exploit this condition during filesystem operations, leaving the flag set on an active file system and causing delayed reference processing to be skipped. This issue can result in filesystem metadata inconsistency, data corruption, or a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-459 · Incomplete Cleanup