SB20260424280 - Improper Initialization in Linux kernel damon

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Initialization (CVE-ID: CVE-2026-31445)

CWE-ID: CWE-665 - Improper Initialization

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 improper handling of a partially updated context in damon_commit_ctx() and kdamond_call() when updating DAMON parameters after an internal memory allocation failure. A local user can trigger a parameter update that encounters an allocation failure to cause a denial of service.

The issue can lead to unexpected behavior including a NULL pointer dereference.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1b247cd0654a3a306996fa80741d79296c683a56
• https://git.kernel.org/stable/c/26f775a054c3cda86ad465a64141894a90a9e145
• https://git.kernel.org/stable/c/9c495f9d3781cd692bd199531cabd4627155e8cd