CVE-2020-25656

 

Published at: - 02-12-2020 02:15

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

Total changes: - 9

Description

A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://lkml.org/lkml/2020/10/29/528
• https://lkml.org/lkml/2020/10/16/84
• https://bugzilla.redhat.com/show_bug.cgi?id=1888726
• [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update-Mailing List, Third Party Advisory
• https://www.starwindsoftware.com/security/sw-20210325-0006/

 

Keywords

NVD

 

CVE-2020-25656

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures