Use-after-free in Linux kernel pci hda

1) Use-after-free

EUVDB-ID: #VU92896

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48735

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the snd_hda_gen_spec_free() and create_mute_led_cdev() functions in sound/pci/hda/hda_generic.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/a7de1002135cf94367748ffc695a29812d7633b5
http://git.kernel.org/stable/c/0e629052f013eeb61494d4df2f1f647c2a9aef47
http://git.kernel.org/stable/c/813e9f3e06d22e29872d4fd51b54992d89cf66c8
http://git.kernel.org/stable/c/549f8ffc7b2f7561bea7f90930b6c5104318e87b

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.