CVE-2020-28974

 

Published at: - 20-11-2020 07:15

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

Total changes: - 4

Description

A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://seclists.org/oss-sec/2020/q4/104
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804
• [oss-security] 20201124 Re: Linux kernel slab-out-of-bounds Read in fbcon-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update-Third Party Advisory
• [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update-Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210108-0003/

 

Keywords

NVD

 

CVE-2020-28974

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures