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VulnerabilityPublished Updated

CVE-2026-64481: Linux kernel · ALSA: hda/cs35l41: Fix firmware load work teardown

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High · fixed in d6a40a4d083ef74d00c8f9516cb5ff07ac70720b : patch Linux kernel soon.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CISA SSVC
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
Total control over the software or total information disclosure

CISA SSVC assessment, 2026-10-16.

Patch
Available – fixed in d6a40a4d083ef74d00c8f9516cb5ff07ac70720b, ce0a903d0591e3e2c790c5b628802b08d1b287cc, b65020d5398f499c09498c9786dba6d67ae57664 +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 47ceabd99a28399f8971f4ca0a37ebc0a21dd2a8, < d6a40a4d083ef74d00c8f9516cb5ff07ac70720b
Fixed in
  • d6a40a4d083ef74d00c8f9516cb5ff07ac70720b
LinuxLinuxAffected
  • ≥ 47ceabd99a28399f8971f4ca0a37ebc0a21dd2a8, < ce0a903d0591e3e2c790c5b628802b08d1b287cc
Fixed in
  • ce0a903d0591e3e2c790c5b628802b08d1b287cc
LinuxLinuxAffected
  • ≥ 47ceabd99a28399f8971f4ca0a37ebc0a21dd2a8, < b65020d5398f499c09498c9786dba6d67ae57664
Fixed in
  • b65020d5398f499c09498c9786dba6d67ae57664
LinuxLinuxAffected
  • ≥ 47ceabd99a28399f8971f4ca0a37ebc0a21dd2a8, < 8947215c0136c9d905e4a46d824824f8b48a2e5b
Fixed in
  • 8947215c0136c9d905e4a46d824824f8b48a2e5b
LinuxLinuxAffected
  • ≥ 47ceabd99a28399f8971f4ca0a37ebc0a21dd2a8, < 3e339c88b8c3044919fd1936a8b23124285d0de6
Fixed in
  • 3e339c88b8c3044919fd1936a8b23124285d0de6
LinuxLinuxAffected
  • =6.0
Fixed in–

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.

References

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