CVE-2026-43358
kernel: btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 8, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's btrfs filesystem. A missing Read-Copy Update (RCU) unlock in an error path within the try_release_subpage_extent_buffer() function could lead to system instability. This issue, identified by a thread-safety analyzer, may result in a denial of service condition, impacting system availability.
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-772 · Missing Release of Resource after Effective Lifetime