Use-after-free in Linux kernel net dsa driver

1) Use-after-free

EUVDB-ID: #VU94426

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/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-2022-48783

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 gswip_remove() function in drivers/net/dsa/lantiq_gswip.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/f48bd34137718042872d06f2c7332b3267a29165
http://git.kernel.org/stable/c/df2495f329b08ac0d0d3e6334a01955ae839005e
http://git.kernel.org/stable/c/c61f599b8d33adfa256126a6695c734c0de331cb
http://git.kernel.org/stable/c/8c6ae46150a453f8ae9a6cd49b45f354f478587d

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.