CVE-2025-40146

blk-mq: fix potential deadlock while nr_requests grown

CVE-2025-40146 is fixed in linux on 1 platform by DEBIAN-CVE-2025-40146 (version 6.17.6-1), released November 12, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0024
15th percentile

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix potential deadlock while nr_requests grown Allocate and free sched_tags while queue is freezed can deadlock[1], this is a long term problem, hence allocate memory before freezing queue and free memory after queue is unfreezed. [1] https://lore.kernel.org/all/0659ea8d-a463-47c8-9180-43c719e106eb@linux.ibm.com/

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 14 6.17.6-1 DEBIAN-CVE-2025-40146 Nov 12, 2025

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