Use of Uninitialized Variable in Linux kernel - CVE-2026-72177
Published: August 16, 2026
Vulnerability identifier: #VU143422
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-2026-72177
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 dereference in damon_sysfs_access_pattern_add_dirs() when handling error paths during sysfs directory creation. A local user can trigger allocation failures in crafted sysfs operations to cause a denial of service.
The issue occurs because directory references are released in the wrong order on error paths, and a memory leak may also result.
Affected software
Linux kernel
How to mitigate CVE-2026-72177
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/0710cc97962ca3bcabaa15ce7fead300faf726cd
- https://git.kernel.org/stable/c/a8c0592a80e954825f2ba29e7f32893f1df762f2
- https://git.kernel.org/stable/c/d58fdbe37a829fd2e5803dd4e5a72992dd8c5368
- https://git.kernel.org/stable/c/e03442b0c48bdb034f5b7cf9f3b76d8025576071
- https://git.kernel.org/stable/c/ee59df7a886a35113f309e3eb791060c46f79bb1
- https://git.kernel.org/stable/c/f18c561eb9c51f1ba3adb6117926a98a66599848