CVE-2023-4389
kernel: btrfs: double free in btrfs_get_root_ref()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 24, 2022
Updated · August 7, 2026
Description
A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.
Statement
The affected code was not introduced into any kernel versions shipped with Red Hat Enterprise Linux, making this issue not applicable to these platforms.
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 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-415 · Double Free