Input validation error in Linux kernel dc hdcp driver

1) Input validation error

EUVDB-ID: #VU97844

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-46814

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the hdmi_14_process_transaction() and dp_11_process_transaction() functions in drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/916083054670060023d3f8a8ace895d710e268f4
http://git.kernel.org/stable/c/fe63daf7b10253b0faaa60c55d6153cd276927aa
http://git.kernel.org/stable/c/0147505f08220c89b3a9c90eb608191276e263a8
http://git.kernel.org/stable/c/cb63090a17d3abb87f132851fa3711281249b7d2
http://git.kernel.org/stable/c/6590643c5de74098d27933b7d224d5ac065d7755
http://git.kernel.org/stable/c/fa71face755e27dc44bc296416ebdf2c67163316

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.