SB20260816357 - Use of Uninitialized Variable in Linux kernel damon
Published: August 16, 2026
Security Bulletin ID
SB20260816357
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Uninitialized Variable (CVE-ID: CVE-2026-72176)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.
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