CVE-2026-72177

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs()

Patch series "mm/damon/sysfs-schemes: fix wrong directories put orders in

error paths".

Error paths of damon_sysfs_access_pattern_add_dirs() and

damon_sysfs_scheme_add_dirs() functions put references to directories in

wrong orders. As a result, uninitialized memory dereference and/or

memory leak can happen. Fix those.

This patch (of 2):

In access_pattern_add_dirs(), error handling path puts references starting

from setup failed directories. If the failure happpened from the initial

allication in the setup functions, uninitialized memory dereference

happen. The allocation failures will not commonly happen, but the

consequence is quite bad. Fix the wrong reference put orders.

The issue was discovered [1] by Sashiko.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References