Release of invalid pointer or reference in R460 and R450 - CVE-2021-1077

Vulnerability identifier: #VU52489

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-1077

CWE-ID: CWE-763

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to the affected software uses a reference count to manage a resource that is incorrectly updated. A local user can cause a denial of service condition in th target system.

R460
R450
Ubuntu
xserver-xorg-video-nvidia-390 (Ubuntu package)
xserver-xorg-video-nvidia-418-server (Ubuntu package)
xserver-xorg-video-nvidia-450 (Ubuntu package)
xserver-xorg-video-nvidia-450-server (Ubuntu package)
xserver-xorg-video-nvidia-460 (Ubuntu package)
xserver-xorg-video-nvidia-460-server (Ubuntu package)

Install updates from vendor's website.

R460 - addressed in versions 390.143, 462.31
R450 - addressed in versions 452.96, 460.73.01
xserver-xorg-video-nvidia-390 (Ubuntu package) - addressed in versions 390.143-0ubuntu0.18.04.1, 390.143-0ubuntu0.20.04.1, 390.143-0ubuntu0.20.10.1
xserver-xorg-video-nvidia-418-server (Ubuntu package) - addressed in versions 418.197.02-0ubuntu0.18.04.1, 418.197.02-0ubuntu0.20.04.1, 418.197.02-0ubuntu0.20.10.1, 418.197.02-0ubuntu1
xserver-xorg-video-nvidia-450 (Ubuntu package) - addressed in versions 450.119.03-0ubuntu0.18.04.1, 450.119.03-0ubuntu0.20.04.1, 450.119.03-0ubuntu0.20.10.1, 450.119.03-0ubuntu1
xserver-xorg-video-nvidia-450-server (Ubuntu package) - addressed in versions 450.119.03-0ubuntu0.18.04.1, 450.119.03-0ubuntu0.20.04.1, 450.119.03-0ubuntu0.20.10.1, 450.119.03-0ubuntu1
xserver-xorg-video-nvidia-460 (Ubuntu package) - addressed in versions 460.73.01-0ubuntu0.18.04.1, 460.73.01-0ubuntu0.20.04.1, 460.73.01-0ubuntu0.20.10.1, 460.73.01-0ubuntu1
xserver-xorg-video-nvidia-460-server (Ubuntu package) - addressed in versions 460.73.01-0ubuntu0.18.04.1, 460.73.01-0ubuntu0.20.04.1, 460.73.01-0ubuntu0.20.10.1, 460.73.01-0ubuntu1

• https://nvidia.custhelp.com/app/answers/detail/a_id/5172

• Multiple vulnerabilities in NVIDIA GPU Display Driver
• Ubuntu update for nvidia-graphics-drivers-390