Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-90004
Published: September 16, 2026
Vulnerability identifier: #VU150285
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90004
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-90004
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3