SB20251008125 - Race condition in Linux kernel block

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2022-50554)

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

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the blk_mq_rq_timed_out(), blk_mq_req_expired(), blk_mq_put_rq_ref(), blk_mq_check_expired() and blk_mq_timeout_work() functions in block/blk-mq.c. A local user can escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/7a73c54a3750895888ab586896736c9434e062a1
• https://git.kernel.org/stable/c/82c229476b8f6afd7e09bc4dc77d89dc19ff7688
• https://git.kernel.org/stable/c/8b3d6b029a552d2978bbac275303d11419826a69
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.2