CVE-2021-20292

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

There is a flaw reported in the Linux kernel in versions before 5.9 in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker with a local account with a root privilege, can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1939686

https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Details

Source: MITRE

Published: 2021-05-28

Updated: 2021-06-23

Type: CWE-416

Risk Information

CVSS v2

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 6.7

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 0.8

Severity: MEDIUM

Tenable Plugins

View all (14 total)

IDNameProductFamilySeverity
156534EulerOS Virtualization 3.0.2.6 : kernel (EulerOS-SA-2021-2857)NessusHuawei Local Security Checks
high
154404EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-2588)NessusHuawei Local Security Checks
high
153271EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)NessusHuawei Local Security Checks
high
151767EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2221)NessusHuawei Local Security Checks
high
151307EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075)NessusHuawei Local Security Checks
high
151240EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2062)NessusHuawei Local Security Checks
high
151238EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2051)NessusHuawei Local Security Checks
high
151229EulerOS Virtualization 3.0.6.6 : kernel (EulerOS-SA-2021-2040)NessusHuawei Local Security Checks
high
151167EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2021-2002)NessusHuawei Local Security Checks
high
150985Debian DLA-2689-1 : linux security updateNessusDebian Local Security Checks
high
150271EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1967)NessusHuawei Local Security Checks
high
150253EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1971)NessusHuawei Local Security Checks
high
149607EulerOS 2.0 SP8 : kernel (EulerOS-SA-2021-1879)NessusHuawei Local Security Checks
high
149410Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4946-1)NessusUbuntu Local Security Checks
medium