Bug 2335898 (CVE-2024-56763)

Summary: CVE-2024-56763 kernel: tracing: Prevent bad count for tracing_cpumask_write
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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OS: Linux   
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Description OSIDB Bzimport 2025-01-06 17:01:48 UTC 
In the Linux kernel, the following vulnerability has been resolved:

tracing: Prevent bad count for tracing_cpumask_write

If a large count is provided, it will trigger a warning in bitmap_parse_user.
Also check zero for it.
Comment 1 Robb Gatica 2025-01-06 18:29:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025010655-CVE-2024-56763-17fd@gregkh/T