Memory leak in Linux kernel amd amdgpu driver

1) Memory leak

EUVDB-ID: #VU90438

Risk: Low

CVSSv3.1: 4.8 [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-2021-47550

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the amdgpu_get_xgmi_hive() function in drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.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/c746945fb6bcbe3863c9ea6369c7ef376e38e5eb
http://git.kernel.org/stable/c/75752ada77e0726327adf68018b9f50ae091baeb
http://git.kernel.org/stable/c/27dfaedc0d321b4ea4e10c53e4679d6911ab17aa

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.