Bug 2393188 (CVE-2025-38706)

Summary: CVE-2025-38706 kernel: ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-04 16:03:50 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime()

snd_soc_remove_pcm_runtime() might be called with rtd == NULL which will
leads to null pointer dereference.
This was reproduced with topology loading and marking a link as ignore
due to missing hardware component on the system.
On module removal the soc_tplg_remove_link() would call
snd_soc_remove_pcm_runtime() with rtd == NULL since the link was ignored,
no runtime was created.
Comment 1 Jon Moroney 2025-09-04 17:49:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025090455-CVE-2025-38706-da55@gregkh/T