#VU63382 Use-after-free


Published: 2022-05-18 | Updated: 2022-05-19

Vulnerability identifier: #VU63382

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-20292

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

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

Vendor:

Description

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to a use-after-free error in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. A local user can escalate privileges and execute code in the context of the kernel.

Mitigation
Install updates from vendor's website.

Vulnerable software versions


External links
http://bugzilla.redhat.com/show_bug.cgi?id=1939686
http://lists.debian.org/debian-lts-announce/2021/06/msg00020.html


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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