CVE-2020-28974 — Out-of-bounds Read in Kernel
Severity
5.0MEDIUMNVD
OSV8.2OSV5.5OSV4.1
EPSS
0.1%
top 81.59%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
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
Also affects: Debian Linux 9.0
Patches
🔴Vulnerability Details
6GHSA
▶
OSV▶
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities↗2021-02-25
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 vulnerabilities↗2021-01-06
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 vulnerabi↗2021-01-06
OSV▶
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities↗2021-01-06