CVE-2026-23142 PUBLISHED

mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure

Assigner: Linux
Reserved: 13.01.2026 Published: 14.02.2026 Updated: 14.02.2026

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

mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure

When a DAMOS-scheme DAMON sysfs directory setup fails after setup of access_pattern/ directory, subdirectories of access_pattern/ 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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 9bbb820a5bd5f406ae5e0819cc31f2c2e6f4d990 to ae8ac0066b48ed957bdcab58f0d3543549c57a29 (excl.)
  • affected from 9bbb820a5bd5f406ae5e0819cc31f2c2e6f4d990 to e9711bd0e64812c694a228cf58c9e6032decee54 (excl.)
  • affected from 9bbb820a5bd5f406ae5e0819cc31f2c2e6f4d990 to 16236b0b4a08fa3e326cf1373ef789dabdc2e30d (excl.)
  • affected from 9bbb820a5bd5f406ae5e0819cc31f2c2e6f4d990 to 725d4fdaa01bd1161782081f419e1568cc7432e0 (excl.)
  • affected from 9bbb820a5bd5f406ae5e0819cc31f2c2e6f4d990 to 392b3d9d595f34877dd745b470c711e8ebcd225c (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.18 is affected
  • unaffected from 0 to 5.18 (excl.)
  • unaffected from 6.1.162 to 6.1.* (incl.)
  • unaffected from 6.6.122 to 6.6.* (incl.)
  • unaffected from 6.12.67 to 6.12.* (incl.)
  • unaffected from 6.18.7 to 6.18.* (incl.)
  • unaffected from 6.19 to * (incl.)

References