Use-after-free in Linux kernel typec tcpm driver

1) Use-after-free

EUVDB-ID: #VU94225

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-2024-40903

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 tcpm_register_sink_caps() function in drivers/usb/typec/tcpm/tcpm.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/4053696594d7235f3638d49a00cf0f289e4b36a3
http://git.kernel.org/stable/c/04c05d50fa79a41582f7bde8a1fd4377ae4a39e5
http://git.kernel.org/stable/c/6b67b652849faf108a09647c7fde9b179ef24e2b
http://git.kernel.org/stable/c/e7e921918d905544500ca7a95889f898121ba886

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.