Bug 2405744 (CVE-2022-50580)

Summary: CVE-2022-50580 kernel: blk-throttle: prevent overflow while calculating wait time
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 2025-10-22 14:03:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

blk-throttle: prevent overflow while calculating wait time

There is a problem found by code review in tg_with_in_bps_limit() that
'bps_limit * jiffy_elapsed_rnd' might overflow. Fix the problem by
calling mul_u64_u64_div_u64() instead.
Comment 1 Jon Moroney 2025-10-22 17:17:56 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102209-CVE-2022-50580-68e3@gregkh/T