ALSA: ac97: fix a double free in snd_ac97_controller_register()
In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: fix a double free in snd_ac97_controller_register() If ac97_add_adapter() fails, put_device() is the correct way to drop the device reference. kfree() is not required. Add kfree() if idr_alloc() fails and in ac97_adapter_release() to do the cleanup. Found by code review.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: fix a double free in snd_ac97_controller_register() If ac97_add_adapter() fails, put_device() is the correct way to drop the device reference. kfree() is not required. Add kfree() if idr_alloc() fails and in ac97_adapter_release() to do the cleanup. Found by code review.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/21f8bc5179bed91c3f946adb5e55d717b891960c
- https://git.kernel.org/stable/c/830988b6cf197e6dcffdfe2008c5738e6c6c3c0f
- https://git.kernel.org/stable/c/c80f9b3349a99a9d5b295f5bbc23f544c5995ad7
- https://git.kernel.org/stable/c/cb73d37ac18bc1716690ff5255a0ef1952827e9e
- https://git.kernel.org/stable/c/fcc04c92cbb5497ce67c58dd2f0001bb87f40396
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71192.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-71192