UBUNTU-CVE-2024-39491
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.
02 / AFFECTED SOFTWARE
Affected packages
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03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/d344873c4cbde249b7152d36a273bcc45864001e
- https://git.kernel.org/stable/c/60d5e087e5f334475b032ad7e6ad849fb998f303
- https://git.kernel.org/stable/c/9054c474f9c219e58a441e401c0e6e38fe713ff1
- https://git.kernel.org/stable/c/d344873c4cbde249b7152d36a273bcc45864001e
- https://ubuntu.com/security/CVE-2024-39491
- https://ubuntu.com/security/notices/USN-6999-1
- https://ubuntu.com/security/notices/USN-6999-2
- https://ubuntu.com/security/notices/USN-7004-1
- https://ubuntu.com/security/notices/USN-7005-1
- https://ubuntu.com/security/notices/USN-7005-2
- https://ubuntu.com/security/notices/USN-7008-1
- https://ubuntu.com/security/notices/USN-7029-1
- https://www.cve.org/CVERecord?id=CVE-2024-39491