CVE-2026-23142
kernel: mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 14, 2026
Updated · June 28, 2026
Description
A resource leak flaw was found in the Linux kernel's DAMON (Data Access MONitor) sysfs interface. When setting up a DAMOS-scheme directory fails after the access_pattern/ subdirectory has been created, the subdirectories are not properly cleaned up. This leaves the DAMON sysfs interface in a broken state until reboot and causes a memory leak for the unremoved directory structures.
Statement
Exploiting this flaw requires access to the DAMON sysfs interface, which typically requires root privileges. The impact is limited to degraded DAMON functionality and minor memory leakage, requiring a reboot to restore normal operation.
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