VulnerabilityPublished 1 Jul 2026Updated 6 Nov 2026

CVE-2026-53350: Linux kernel · ASoC: wm_adsp: Fix NULL dereference when removing firmware controls

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in 12e579b889624ec54a201d98fdff975de556c731 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in 12e579b889624ec54a201d98fdff975de556c731, 10def23b67b42679d5b1a356e1a6f3498bd188c3, 7d3fb78b550301e43fdc60312aed733069694426 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 1 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 0700bc2fb94c28459f57a10d2ee2c7ef4cb70862, < 12e579b889624ec54a201d98fdff975de556c731	Fixed in 12e579b889624ec54a201d98fdff975de556c731
LinuxLinux	Affected ≥ 0700bc2fb94c28459f57a10d2ee2c7ef4cb70862, < 10def23b67b42679d5b1a356e1a6f3498bd188c3	Fixed in 10def23b67b42679d5b1a356e1a6f3498bd188c3
LinuxLinux	Affected ≥ 0700bc2fb94c28459f57a10d2ee2c7ef4cb70862, < 7d3fb78b550301e43fdc60312aed733069694426	Fixed in 7d3fb78b550301e43fdc60312aed733069694426
LinuxLinux	Affected ≥ 0700bc2fb94c28459f57a10d2ee2c7ef4cb70862, < 6effd6f7b0ba1f5d1df702b2ef7460bcc215e9b7	Fixed in 6effd6f7b0ba1f5d1df702b2ef7460bcc215e9b7
LinuxLinux	Affected ≥ 0700bc2fb94c28459f57a10d2ee2c7ef4cb70862, < 5ee9bbe2af2f373e08d3017f9aef2f2eaf29fbc3	Fixed in 5ee9bbe2af2f373e08d3017f9aef2f2eaf29fbc3
LinuxLinux	Affected ≥ 0700bc2fb94c28459f57a10d2ee2c7ef4cb70862, < 2f1be283aa777d655525d000d16474b7e7d015ea	Fixed in 2f1be283aa777d655525d000d16474b7e7d015ea

Description

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.

References

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