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CVE-2025-40146

blk-mq: fix potential deadlock while nr_requests grown

N/A
Published: November 12, 2025 at 10:23 AM UTC
Updated: October 19, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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/[email protected]/

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
3.16e3a2b3f931f59d5284abd13faf8bded726884ffd
Vendor states this is fixed in 8d26acf8477174d8ef690eb6affe13a630f586ae (fixed)
Vendor states this is fixed in b86433721f46d934940528f28d49c1dedb690df1 (fixed)
Vendor states this is fixed in 3.16 (unaffected)
Vendor states this is fixed in 6.17.3 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
https://git.kernel.org/stable/c/8d26acf8477174d8ef690eb6affe13a630f586ae
Source: cverecord
https://git.kernel.org/stable/c/b86433721f46d934940528f28d49c1dedb690df1

Quick Info

StatusDEFERRED

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