CVE-2019-20908 — Improper Privilege Management in Kernel
Severity
6.7MEDIUMNVD
OSV4.6OSV4.1
EPSS
0.0%
top 94.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 15
Latest updateMay 24
Description
An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9
Affected Packages4 packages
Also affects: Ubuntu Linux 16.04, 18.04
Patches
🔴Vulnerability Details
7OSV▶
linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities↗2020-07-31
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-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities↗2020-07-27
OSV▶
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities↗2020-07-27