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Linux Kernel: Failed DAMON Setup Leaves System Files Untidy
CVE-2026-23144
Summary
A fix has been made to the Linux kernel to properly clean up files in the system after a failure to set up DAMON, a feature that monitors memory usage. This prevents system files from being left in an inconsistent state and wasting memory. Users do not need to take any action, as this issue has been resolved in the latest kernel updates.
Original title
In the Linux kernel, the following vulnerability has been resolved:
mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure
When a context DAMON sysfs directory setup is failed after s...
Original description
In the Linux kernel, the following vulnerability has been resolved:
mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure
When a context DAMON sysfs directory setup is failed after setup of attrs/
directory, subdirectories of attrs/ directory are not cleaned up. As a
result, DAMON sysfs interface is nearly broken until the system reboots,
and the memory for the unremoved directory is leaked.
Cleanup the directories under such failures.
mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure
When a context DAMON sysfs directory setup is failed after setup of attrs/
directory, subdirectories of attrs/ directory are not cleaned up. As a
result, DAMON sysfs interface is nearly broken until the system reboots,
and the memory for the unremoved directory is leaked.
Cleanup the directories under such failures.
- https://git.kernel.org/stable/c/43964644348f6b1add3055c4a6cae8f77d892a6e
- https://git.kernel.org/stable/c/5651c0c391c0029541794f9c4c9597faecfd401f
- https://git.kernel.org/stable/c/78b4eb99751ebd37ceade78810bf94de80f7fb3a
- https://git.kernel.org/stable/c/9814cc832b88bd040fc2a1817c2b5469d0f7e862
- https://git.kernel.org/stable/c/db7dfe78fc81bdd2b532d77f340fe453f2360426
Published: 14 Feb 2026 · Updated: 10 Mar 2026 · First seen: 6 Mar 2026