Bug 2468241 (CVE-2026-43443)

Summary: CVE-2026-43443 kernel: ASoC: amd: acp-mach-common: Add missing error check for clock acquisition
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
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 Advanced Linux Sound Architecture (ALSA) System on Chip (ASoC) AMD Audio CoProcessor (ACP) machine common driver within the Linux kernel. The `acp_card_rt5682_init()` and `acp_card_rt5682s_init()` functions failed to validate the return values from clock acquisition calls. This oversight could lead to the dereferencing of invalid pointers by clock core functions, resulting in a kernel crash and a Denial of Service (DoS) for the system.
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Description OSIDB Bzimport 2026-05-08 15:06:34 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ASoC: amd: acp-mach-common: Add missing error check for clock acquisition

The acp_card_rt5682_init() and acp_card_rt5682s_init() functions did not
check the return values of clk_get(). This could lead to a kernel crash
when the invalid pointers are later dereferenced by clock core
functions.

Fix this by:
1. Changing clk_get() to the device-managed devm_clk_get().
2. Adding IS_ERR() checks immediately after each clock acquisition.
Comment 1 Keith Grant 2026-05-09 00:18:59 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050855-CVE-2026-43443-d120@gregkh/T