SB2026070254 - NULL pointer dereference in Linux kernel soc sdca

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-53348)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 attacker to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in sdca_dev_unregister_functions when unregistering SDCA function devices after partial registration failure or cleanup races with probe deferral. A local attacker can trigger device registration failure or a cleanup race to cause a denial of service.

This can result in a kernel oops during SoundWire device cleanup.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/9a4895059bb6a8505098a9f75de187fd15631fc8
• https://git.kernel.org/stable/c/e4c60a1d4b6ccc66aefb3789cd908d4f9482eefd