CVE-2025-40146
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 versions
Linux kernel versions
3.16
and later are affected. Fixed in
6.17.3,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40146 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/8d26acf8477174d8ef690eb6affe13a630f586ae
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PatchKernel patch commithttps://git.kernel.org/stable/c/b86433721f46d934940528f28d49c1dedb690df1
Frequently asked questions
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What is CVE-2025-40146?
CVE-2025-40146 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.16 onward and has been patched in 6.17.3 and 6.18. CVE-2025-40146 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-40146?
Yes — CVE-2025-40146 has been patched. Fixed versions include 6.17.3 and 6.18. If you are running Linux kernel 3.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40146 actively exploited?
No — CVE-2025-40146 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.