Bug 2388936 (CVE-2025-38543)

Summary: CVE-2025-38543 kernel: drm/tegra: nvdec: Fix dma_alloc_coherent error check
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
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the tegra-drm module in the Linux kernel. When a DMA allocation fails, a missing return value check can cause a system crash and result in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-08-16 12:02:26 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm/tegra: nvdec: Fix dma_alloc_coherent error check

Check for NULL return value with dma_alloc_coherent, in line with
Robin's fix for vic.c in 'drm/tegra: vic: Fix DMA API misuse'.

Comment 1 Mauro Matteo Cascella 2025-08-27 15:59:54 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025081626-CVE-2025-38543-038d@gregkh/T