CVE-2024-39491: ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance
First published: Wed Jul 10 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.6.33 | 6.6.33 |
| redhat/kernel | <6.9.4 | 6.9.4 |
| redhat/kernel | <6.10 | 6.10 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/60d5e087e5f334475b032ad7e6ad849fb998f303
- https://git.kernel.org/stable/c/9054c474f9c219e58a441e401c0e6e38fe713ff1
- https://git.kernel.org/stable/c/d344873c4cbde249b7152d36a273bcc45864001e
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39491
- https://nvd.nist.gov/vuln/detail/CVE-2024-39491
- https://launchpad.net/bugs/cve/CVE-2024-39491
- https://security-tracker.debian.org/tracker/CVE-2024-39491
- https://ubuntu.com/security/CVE-2024-39491
- https://git.kernel.org/linus/d344873c4cbde249b7152d36a273bcc45864001e
- https://access.redhat.com/security/cve/CVE-2024-39491
- https://lore.kernel.org/linux-cve-announce/2024071016-CVE-2024-39491-fb62@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2297061
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