CVE-2020-28974Out-of-bounds Read in Kernel

CWE-125Out-of-bounds Read16 documents8 sources
Severity
5.0MEDIUMNVD
OSV8.2OSV5.5OSV4.1
EPSS
0.1%
top 81.59%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedNov 20
Latest updateFeb 14

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.

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:HExploitability: 0.3 | Impact: 4.7

Affected Packages6 packages

NVDlinux/linux_kernel< 5.9.7
Debianlinux/linux_kernel< 5.9.9-1+3
Ubuntulinux/linux_kernel< 4.4.0-198.230+2
debiandebian/linux< linux 5.9.9-1 (bookworm)

Also affects: Debian Linux 9.0

Patches

🔴Vulnerability Details

6
GHSA
GHSA-vqgg-ch69-x69v: A slab-out-of-bounds read in fbcon in the Linux kernel before 52022-05-24
OSV
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities2021-02-25
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities2021-01-06
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabi2021-01-06
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities2021-01-06

📋Vendor Advisories

9
Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS2024-02-14
Ubuntu
Linux kernel vulnerabilities2021-02-25
Ubuntu
Linux kernel (OEM) vulnerability2021-01-07
Ubuntu
Linux kernel vulnerabilities2021-01-06
Ubuntu
Linux kernel vulnerabilities2021-01-06