Vulnerability identifier: #VU91652

Vulnerability 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-2021-47144

CWE-ID: CWE-401

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 memory leak within the amdgpu_fbdev_destroy() function in drivers/gpu/drm/amd/amdgpu/amdgpu_fb.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/599e5d61ace952b0bb9bd942b198bbd0cfded1d7
http://git.kernel.org/stable/c/dde2656e0bbb2ac7d83a7bd95a8d5c3c95bbc009
http://git.kernel.org/stable/c/9fdb8ed37a3a44f9c49372b69f87fd5f61cb3240
http://git.kernel.org/stable/c/95a4ec905e51a30c64cf2d78b04a7acbeae5ca94
http://git.kernel.org/stable/c/fa7e6abc75f3d491bc561734312d065dc9dc2a77

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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.