What’s Vulnerable › Vulnerabilities

CVE-2026-23142: mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-14 · updated 2026-06-17

Description

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.

Affected products

• Linux kernel: from 5.18 before 6.1.162; from 6.2 before 6.6.122; from 6.7 before 6.12.67; from 6.13 before 6.18.7; 6.19-rc1, 6.19-rc2, 6.19-rc3, 6.19-rc4, 6.19-rc5 — fixed in 6.1.162, 6.12.67, 6.18.7, 6.6.122

How to fix

Upgrade to a fixed version: Linux kernel 6.1.162, 6.12.67, 6.18.7, 6.6.122. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/16236b0b4a08fa3e326cf1373ef789dabdc2e30d
• https://git.kernel.org/stable/c/392b3d9d595f34877dd745b470c711e8ebcd225c
• https://git.kernel.org/stable/c/725d4fdaa01bd1161782081f419e1568cc7432e0
• https://git.kernel.org/stable/c/ae8ac0066b48ed957bdcab58f0d3543549c57a29
• https://git.kernel.org/stable/c/e9711bd0e64812c694a228cf58c9e6032decee54

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