Vulnerability identifier: #VU95098

Vulnerability 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-2024-42121

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 read() and write() functions in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/b5b8837d066cc182ff69fb5629ad32ade5484567
http://git.kernel.org/stable/c/fbb0701af9734cff13917a4b98b5ee9da2fde48d
http://git.kernel.org/stable/c/ae91ffbc8b8d942e3e7f188728cad557b7ed5ee4
http://git.kernel.org/stable/c/9933eca6ada0cd612e19522e7a319bcef464c0eb
http://git.kernel.org/stable/c/a31ea49dc8064a557565725cf045944307476a6e
http://git.kernel.org/stable/c/59d99deb330af206a4541db0c4da8f73880fba03

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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.