CVE-2020-25632

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.2 HIGH
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
redhatCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
VendorProductVersion
gnugrub2
𝑥
< 2.06
redhatenterprise_linux
7.0
redhatenterprise_linux
8.0
redhatenterprise_linux_server_aus
7.2
redhatenterprise_linux_server_aus
7.3
redhatenterprise_linux_server_aus
7.4
redhatenterprise_linux_server_aus
7.6
redhatenterprise_linux_server_aus
7.7
redhatenterprise_linux_server_aus
8.2
redhatenterprise_linux_server_eus
7.6
redhatenterprise_linux_server_eus
7.7
redhatenterprise_linux_server_eus
8.1
redhatenterprise_linux_server_tus
7.4
redhatenterprise_linux_server_tus
7.6
redhatenterprise_linux_server_tus
7.7
redhatenterprise_linux_server_tus
8.2
redhatenterprise_linux_workstation
7.0
netappontap_select_deploy_administration_utility
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
grub2
bullseye (security)
2.06-3~deb11u6
fixed
bullseye
2.06-3~deb11u6
fixed
stretch
ignored
bookworm
2.06-13+deb12u1
fixed
bookworm (security)
2.06-13+deb12u1
fixed
sid
2.12-5
fixed
trixie
2.12-5
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
grub2
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
grub2-signed
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
Fixed 1.169
released
hirsute
Fixed 1.164
released
groovy
Fixed 1.167.2
released
focal
Fixed 1.167.2
released
bionic
Fixed 1.167~18.04.5
released
xenial
Fixed 1.164
released
trusty
needed
grub2-unsigned
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
Fixed 2.04-1ubuntu45
released
hirsute
Fixed 2.04-1ubuntu42
released
groovy
Fixed 2.04-1ubuntu44.2
released
focal
Fixed 2.04-1ubuntu44.2
released
bionic
Fixed 2.04-1ubuntu44.1.2
released
xenial
Fixed 2.04-1ubuntu42
released
trusty
dne