Bug 2363266 (CVE-2025-23155)

Summary: CVE-2025-23155 kernel: net: stmmac: Fix accessing freed irq affinity_hint
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-05-01 14:01:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: stmmac: Fix accessing freed irq affinity_hint

The cpumask should not be a local variable, since its pointer is saved
to irq_desc and may be accessed from procfs.
To fix it, use the persistent mask cpumask_of(cpu#).
Comment 1 Avinash Hanwate 2025-05-02 05:13:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050129-CVE-2025-23155-a9c4@gregkh/T