SB2026091859 - Race condition in Linux kernel cgroup

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-93150)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause incorrect operations.

The vulnerability exists due to a race condition in the cpuset subsystem's nr_deadline_tasks counter when concurrent scheduler-policy changes and cpuset attachment operations update the counter. A local user can perform concurrent scheduler-policy and cpuset attachment operations to cause incorrect operations.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/78d9daf5e13ad1448b7dfebac949936710ec7565
• https://git.kernel.org/stable/c/95220e1f18f6321008f021abc7d6f581f64bcb82
• https://git.kernel.org/stable/c/e422b32e6a57269ca8164c60674a78bee85cf5fb
• https://git.kernel.org/stable/c/e5965ae3f7c918151b87e5c925b7978afbeaf638