SB20260916110 - Improper Check or Handling of Exceptional Conditions in Linux kernel damon

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-90004)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to improper handling of memory allocation failures in damon_apply_min_nr_regions() when splitting DAMON regions to meet a user-defined minimum region limit. A local user can trigger region splitting during a memory allocation failure to cause memory corruption.

The allocation failure condition is described as rare, and any resulting minimum-region-count violation is temporary.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/463ebd63e8ee3d73022a18915ea43320dad8aad7
• https://git.kernel.org/stable/c/c608748607620f331196ed0ba9fe4017892c1457