Bug 2467193 (CVE-2026-43257)

Summary: CVE-2026-43257 kernel: media: cx88: Add missing unmap in snd_cx88_hw_params()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's cx88 media driver. This issue stems from a missing resource deallocation in the snd_cx88_hw_params() function during error handling. This could allow a local attacker to cause a resource leak, potentially leading to system instability or a denial of service (DoS).
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Description OSIDB Bzimport 2026-05-06 13:09:59 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: cx88: Add missing unmap in snd_cx88_hw_params()

In error path, add cx88_alsa_dma_unmap() to release
resource acquired by cx88_alsa_dma_map().
Comment 1 Keith Grant 2026-05-06 23:24:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050605-CVE-2026-43257-e76e@gregkh/T