CVE-2026-64481

ALSA: hda/cs35l41: Fix firmware load work teardown

HIGH
7.8
CVSS Score
Published: July 25, 2026 at 08:51 AM UTC
Updated: October 30, 2026 at 01:19 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/cs35l41: Fix firmware load work teardown cs35l41_hda creates ALSA controls whose private data points at the cs35l41_hda object. The firmware load control can also queue fw_load_work. Those controls are not removed on component unbind, and device remove only cancels fw_load_work through cs35l41_remove_dsp(). That helper is skipped when halo_initialized is false. With firmware_autostart disabled, a firmware load can be requested before the DSP has been initialized. If the component or device is removed before the queued work runs, the worker can run after teardown and dereference driver state that is no longer valid. Track the created controls and remove them on unbind so no new control callback can reach the driver data or queue more work. Then cancel fw_load_work to drain any request that was already queued. Also cancel the work unconditionally during device remove before runtime PM teardown.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

47ceabd99a28399f8971f4ca0a37ebc0a21dd2a86.0
Vendor states this is fixed in 8947215c0136c9d905e4a46d824824f8b48a2e5b (fixed)
Vendor states this is fixed in b65020d5398f499c09498c9786dba6d67ae57664 (fixed)
Vendor states this is fixed in ce0a903d0591e3e2c790c5b628802b08d1b287cc (fixed)
Vendor states this is fixed in d6a40a4d083ef74d00c8f9516cb5ff07ac70720b (fixed)
Vendor states this is fixed in 6.0 (unaffected)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.39 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.1.4 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-416

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