Linux Kernel up to 5.8 Nouveau DRM Subsystem nouveau_sgdma.c nouveau_sgdma_create_ttm use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.8 and classified as critical. The impacted element is the function nouveau_sgdma_create_ttm of the file drivers/gpu/drm/nouveau/nouveau_sgdma.c of the component Nouveau DRM Subsystem. The manipulation results in use after free. This vulnerability is known as CVE-2021-20292. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.8 (Operating System). Affected is the function nouveau_sgdma_create_ttm of the file drivers/gpu/drm/nouveau/nouveau_sgdma.c of the component Nouveau DRM Subsystem. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 05/28/2021. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2021-20292. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 245558 (Linux Distros Unpatched Vulnerability : CVE-2021-20292), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.9 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (245558). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.2
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 245558
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-20292

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.9

Timelineinfo

12/17/2020 🔍
05/28/2021 +161 days 🔍
05/28/2021 +0 days 🔍
08/08/2025 +1533 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-20292 (🔍)
GCVE (CVE): GCVE-0-2021-20292
GCVE (VulDB): GCVE-100-176040

Entryinfo

Created: 05/28/2021 16:14
Updated: 08/08/2025 17:08
Changes: 05/28/2021 16:14 (42), 06/03/2021 08:52 (5), 08/08/2025 17:08 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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