CVE-2020-14331

 

Published at: - 15-09-2020 09:15

Last modified: - 26-10-2022 01:44

Total changes: - 5

Description

A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1858679
• https://lists.openwall.net/linux-kernel/2020/07/29/234
• https://www.openwall.com/lists/oss-security/2020/07/28/2
• [debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2020-14331

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures