Out-of-bounds read in Linux kernel drm dp driver

1) Out-of-bounds read

EUVDB-ID: #VU104539

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49218

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to an out-of-bounds read error within the drm_dp_link_get_adjustments() function in drivers/gpu/drm/tegra/dp.c, within the drm_dp_get_adjust_tx_ffe_preset() function in drivers/gpu/drm/dp/drm_dp.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

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/a2151490cc6c57b368d7974ffd447a8b36ade639
https://git.kernel.org/stable/c/aeaed9a9fe694f8b1462fb81e2d33298c929180b

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.