CVE Vulnerability

CVE-2020-28974

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.

6.1 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 8.5

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact COMPLETE

Scope

5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.3 / Impact : 4.7

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://seclists.org/oss-sec/2020/q4/104 Exploit Mailing List
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7 Release Notes Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804 Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2020/11/25/1 Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Third Party Advisory
https://security.netapp.com/advisory/ntap-20210108-0003/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2020-11-20 06:15

Updated : 2021-01-27 07:44

NVD link : CVE-2020-28974

Mitre link : CVE-2020-28974

Products Affected
No products.
CWE
CWE-125

Out-of-bounds Read