CVE-2026-53350

Summary

In the Linux kernel, the following vulnerability has been resolved:

ASoC: wm_adsp: Fix NULL dereference when removing firmware controls

In wm_adsp_control_remove() check that the priv pointer is not NULL before attempting to cleanup what it points to.

When cs_dsp creates a control it calls wm_adsp_control_add_cb() so that wm_adsp can create its own private control data. There are two cases where private data is not created:

  1. The control is a SYSTEM control, so an ALSA control is not created.

  2. The codec driver has registered a control_add() callback that hides the control, so wm_adsp_control_add() is not called.

When cs_dsp_remove destroys its control list it calls wm_adsp_control_remove() for each control. But wm_adsp_control_remove() was attempting to cleanup the private data pointed to by cs_ctl->priv without checking the pointer for NULL.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0700bc2fb94c28459f57a10d2ee2c7ef4cb70862 < 5ee9bbe2af2f373e08d3017f9aef2f2eaf29fbc3affected
LinuxLinux0700bc2fb94c28459f57a10d2ee2c7ef4cb70862 < 10def23b67b42679d5b1a356e1a6f3498bd188c3affected
LinuxLinux0700bc2fb94c28459f57a10d2ee2c7ef4cb70862 < 2f1be283aa777d655525d000d16474b7e7d015eaaffected
LinuxLinux0700bc2fb94c28459f57a10d2ee2c7ef4cb70862 < 12e579b889624ec54a201d98fdff975de556c731affected
LinuxLinux0700bc2fb94c28459f57a10d2ee2c7ef4cb70862 < 6effd6f7b0ba1f5d1df702b2ef7460bcc215e9b7affected
LinuxLinux0700bc2fb94c28459f57a10d2ee2c7ef4cb70862 < 7d3fb78b550301e43fdc60312aed733069694426affected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.94 <= 6.12.*unaffected
LinuxLinux6.18.36 <= 6.18.*unaffected
LinuxLinux7.0.13 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References