Bug 2379193 (CVE-2025-38302)

Summary: CVE-2025-38302 kernel: block: don't use submit_bio_noacct_nocheck in blk_zone_wplug_bio_work
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-07-10 08:02:43 UTC 
In the Linux kernel, the following vulnerability has been resolved:

block: don't use submit_bio_noacct_nocheck in blk_zone_wplug_bio_work

Bios queued up in the zone write plug have already gone through all all
preparation in the submit_bio path, including the freeze protection.

Submitting them through submit_bio_noacct_nocheck duplicates the work
and can can cause deadlocks when freezing a queue with pending bio
write plugs.

Go straight to ->submit_bio or blk_mq_submit_bio to bypass the
superfluous extra freeze protection and checks.
Comment 1 Avinash Hanwate 2025-07-11 10:07:05 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025071013-CVE-2025-38302-b915@gregkh/T