Bug 2320426 (CVE-2024-50012)

Summary: CVE-2024-50012 kernel: cpufreq: Avoid a bad reference count on CPU node
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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Hardware: All   
OS: Linux   
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Bug Depends On: 2320762    
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Description OSIDB Bzimport 2024-10-21 19:01:12 UTC 
In the Linux kernel, the following vulnerability has been resolved:

cpufreq: Avoid a bad reference count on CPU node

In the parse_perf_domain function, if the call to
of_parse_phandle_with_args returns an error, then the reference to the
CPU device node that was acquired at the start of the function would not
be properly decremented.

Address this by declaring the variable with the __free(device_node)
cleanup attribute.
Comment 1 Robb Gatica 2024-10-21 21:57:01 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102109-CVE-2024-50012-db7d@gregkh/T