Executive Summary

Informations
Name CVE-2021-20292 First vendor Publication 2021-05-28
Vendor Cve Last vendor Modification 2021-06-23

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 6.7
Base Score 6.7 Environmental Score 6.7
impact SubScore 5.9 Temporal Score 6.7
Exploitabality Sub Score 0.8
 
Attack Vector Local Attack Complexity Low
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20292

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 3370
Os 2

Sources (Detail)

Source Url
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1939686
MLIST https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Alert History

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Date Informations
2021-06-23 09:23:07
  • Multiple Updates
2021-06-03 00:22:48
  • Multiple Updates
2021-06-02 21:23:07
  • Multiple Updates
2021-05-29 05:22:45
  • Multiple Updates
2021-05-28 17:22:49
  • First insertion