SB2026050890 - Improper Check or Handling of Exceptional Conditions in Linux kernel amd acp

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-43443)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper exception handling in acp_card_rt5682_init() and acp_card_rt5682s_init() when acquiring clocks. A local user can trigger the vulnerable code path to cause a denial of service.

The issue can lead to a kernel crash when invalid clock pointers are later dereferenced by clock core functions.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0cee68fb7f4cf1562e067c5a82d25062a973b0d0
• https://git.kernel.org/stable/c/30c64fb9839949f085c8eb55b979cbd8a4c51f00