CVE-2018-20856

An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
VendorProductVersion
linuxlinux_kernel
𝑥
< 4.18.7
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
jessie
not-affected
bullseye (security)
5.10.226-1
fixed
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
trixie
6.11.5-1
fixed
sid
6.11.6-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
disco
not-affected
bionic
Fixed 4.15.0-58.64
released
xenial
Fixed 4.4.0-161.189
released
trusty
not-affected
linux-aws
disco
not-affected
bionic
Fixed 4.15.0-1047.49
released
xenial
Fixed 4.4.0-1092.103
released
trusty
ignored
linux-aws-hwe
disco
dne
bionic
dne
xenial
Fixed 4.15.0-1047.49~16.04.1
released
trusty
dne
linux-azure
disco
not-affected
bionic
Fixed 4.18.0-1011.11~18.04.1
released
xenial
Fixed 4.15.0-1055.60
released
trusty
ignored
linux-azure-edge
disco
dne
bionic
Fixed 4.18.0-1011.11~18.04.1
released
xenial
Fixed 4.15.0-1055.60
released
trusty
dne
linux-euclid
disco
dne
bionic
dne
xenial
ignored
trusty
dne
linux-flo
disco
dne
bionic
dne
xenial
ignored
trusty
dne
linux-gcp
disco
not-affected
bionic
Fixed 4.15.0-1040.42
released
xenial
Fixed 4.15.0-1040.42~16.04.1
released
trusty
dne
linux-gcp-edge
disco
dne
bionic
Fixed 4.15.0-1040.42
released
xenial
dne
trusty
dne
linux-gke
disco
dne
bionic
dne
xenial
ignored
trusty
dne
linux-gke-4.15
disco
dne
bionic
Fixed 4.15.0-1040.42
released
xenial
dne
trusty
dne
linux-gke-5.0
disco
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-goldfish
disco
dne
bionic
dne
xenial
ignored
trusty
dne
linux-grouper
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-hwe
disco
dne
bionic
not-affected
xenial
Fixed 4.15.0-58.64~16.04.1
released
trusty
dne
linux-hwe-edge
disco
dne
bionic
not-affected
xenial
Fixed 4.15.0-58.64~16.04.1
released
trusty
dne
linux-kvm
disco
not-affected
bionic
Fixed 4.15.0-1042.42
released
xenial
Fixed 4.4.0-1056.63
released
trusty
dne
linux-lts-trusty
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-utopic
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-vivid
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-wily
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-xenial
disco
dne
bionic
dne
xenial
dne
trusty
ignored
linux-maguro
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-mako
disco
dne
bionic
dne
xenial
ignored
trusty
dne
linux-manta
disco
dne
bionic
dne
xenial
dne
trusty
dne
linux-oem
disco
Fixed 4.15.0-1050.57
released
bionic
Fixed 4.15.0-1050.57
released
xenial
ignored
trusty
dne
linux-oracle
disco
Fixed 5.0.0-1004.8
released
bionic
Fixed 4.15.0-1021.23
released
xenial
Fixed 4.15.0-1021.23~16.04.1
released
trusty
dne
linux-raspi2
disco
not-affected
bionic
Fixed 4.15.0-1043.46
released
xenial
Fixed 4.4.0-1120.129
released
trusty
dne
linux-snapdragon
disco
not-affected
bionic
Fixed 4.15.0-1060.66
released
xenial
Fixed 4.4.0-1124.130
released
trusty
dne
References