Use-after-free in Linux kernel - CVE-2026-90006
Published: September 16, 2026
Vulnerability identifier: #VU150275
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90006
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger a use-after-free condition.
The vulnerability exists due to use-after-free in damon_sample_mtier_stop() when stopping DAMON mtier contexts after one context has already stopped. A local user can invoke the mtier stop operation after an unexpected context stop to trigger the use-after-free condition.
Unexpected context stops can occur because of memory allocation failures in kdamond_fn().
Affected software
Linux kernel
How to mitigate CVE-2026-90006
Install security update from vendor's repository.