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Unrated severityNVD Advisory· Published Jul 10, 2024· Updated May 4, 2025

ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance

CVE-2024-39491

Description

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

ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance

The cs_dsp instance is initialized in the driver probe() so it should be freed in the driver remove(). Also fix a missing call to cs_dsp_remove() in the error path of cs35l56_hda_common_probe().

The call to cs_dsp_remove() was being done in the component unbind callback cs35l56_hda_unbind(). This meant that if the driver was unbound and then re-bound it would be using an uninitialized cs_dsp instance.

It is best to initialize the cs_dsp instance in probe() so that it can return an error if it fails. The component binding API doesn't have any error handling so there's no way to handle a failure if cs_dsp was initialized in the bind.

Affected products

50

Patches

3
d344873c4cbd
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit
60d5e087e5f3
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit
9054c474f9c2
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit

Vulnerability mechanics

Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

3

News mentions

0

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