Use of Uninitialized Variable in Linux kernel - CVE-2026-72176
Published: August 16, 2026
Vulnerability identifier: #VU143421
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72176
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to uninitialized memory access in damon_sysfs_scheme_add_dirs() when handling an internal error during tried_regions directory setup. A local user can trigger the error path to cause a denial of service.
The issue occurs in the DAMON sysfs schemes code path when tried_regions directory setup fails from the initial allocation.
Affected software
Linux kernel
How to mitigate CVE-2026-72176
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/05ea83ee88ca70f8932906d9f2617ff996f45b50
- https://git.kernel.org/stable/c/40a04601a3f66cabd6629c258a07af645a658865
- https://git.kernel.org/stable/c/50a753171d255895e5dd41566986b48dcec06f31
- https://git.kernel.org/stable/c/6b6b5d7c2c957136b92c00b77b7175259f13082b
- https://git.kernel.org/stable/c/f63d6e5ba72aeacdee4fddc902bd7616cd62b919