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
NISTPrimary
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 26%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
𝑥
< 4.18.7
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
jessie
not-affected
sid
6.11.6-1
fixed
trixie
6.11.5-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
bionic
Fixed 4.15.0-58.64
released
disco
not-affected
trusty
not-affected
xenial
Fixed 4.4.0-161.189
released
linux-aws
bionic
Fixed 4.15.0-1047.49
released
disco
not-affected
trusty
ignored
xenial
Fixed 4.4.0-1092.103
released
linux-aws-hwe
bionic
dne
disco
dne
trusty
dne
xenial
Fixed 4.15.0-1047.49~16.04.1
released
linux-azure
bionic
Fixed 4.18.0-1011.11~18.04.1
released
disco
not-affected
trusty
ignored
xenial
Fixed 4.15.0-1055.60
released
linux-azure-edge
bionic
Fixed 4.18.0-1011.11~18.04.1
released
disco
dne
trusty
dne
xenial
Fixed 4.15.0-1055.60
released
linux-euclid
bionic
dne
disco
dne
trusty
dne
xenial
ignored
linux-flo
bionic
dne
disco
dne
trusty
dne
xenial
ignored
linux-gcp
bionic
Fixed 4.15.0-1040.42
released
disco
not-affected
trusty
dne
xenial
Fixed 4.15.0-1040.42~16.04.1
released
linux-gcp-edge
bionic
Fixed 4.15.0-1040.42
released
disco
dne
trusty
dne
xenial
dne
linux-gke
bionic
dne
disco
dne
trusty
dne
xenial
ignored
linux-gke-4.15
bionic
Fixed 4.15.0-1040.42
released
disco
dne
trusty
dne
xenial
dne
linux-gke-5.0
bionic
not-affected
disco
dne
trusty
dne
xenial
dne
linux-goldfish
bionic
dne
disco
dne
trusty
dne
xenial
ignored
linux-grouper
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-hwe
bionic
not-affected
disco
dne
trusty
dne
xenial
Fixed 4.15.0-58.64~16.04.1
released
linux-hwe-edge
bionic
not-affected
disco
dne
trusty
dne
xenial
Fixed 4.15.0-58.64~16.04.1
released
linux-kvm
bionic
Fixed 4.15.0-1042.42
released
disco
not-affected
trusty
dne
xenial
Fixed 4.4.0-1056.63
released
linux-lts-trusty
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-lts-utopic
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-lts-vivid
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-lts-wily
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-lts-xenial
bionic
dne
disco
dne
trusty
ignored
xenial
dne
linux-maguro
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-mako
bionic
dne
disco
dne
trusty
dne
xenial
ignored
linux-manta
bionic
dne
disco
dne
trusty
dne
xenial
dne
linux-oem
bionic
Fixed 4.15.0-1050.57
released
disco
Fixed 4.15.0-1050.57
released
trusty
dne
xenial
ignored
linux-oracle
bionic
Fixed 4.15.0-1021.23
released
disco
Fixed 5.0.0-1004.8
released
trusty
dne
xenial
Fixed 4.15.0-1021.23~16.04.1
released
linux-raspi2
bionic
Fixed 4.15.0-1043.46
released
disco
not-affected
trusty
dne
xenial
Fixed 4.4.0-1120.129
released
linux-snapdragon
bionic
Fixed 4.15.0-1060.66
released
disco
not-affected
trusty
dne
xenial
Fixed 4.4.0-1124.130
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
kernel-default
suse enterprise server 12 SP2
4.4.121-92.120.1
fixed
suse enterprise server 12 SP3
4.4.180-94.103.1
fixed
kernel-default-base
suse enterprise server 12 SP2
4.4.121-92.120.1
fixed
suse enterprise server 12 SP3
4.4.180-94.103.1
fixed
kernel-default-man
suse enterprise server 12 SP2
4.4.121-92.120.1
fixed
suse enterprise server 12 SP3
4.4.180-94.103.1
fixed
kernel-macros
suse enterprise server 12 SP2
4.4.121-92.120.1
fixed
suse enterprise server 12 SP3
4.4.180-94.103.1
fixed
kernel-source
suse enterprise server 12 SP2
4.4.121-92.120.1
fixed
suse enterprise server 12 SP3
4.4.180-94.103.1
fixed
kernel-syms
suse enterprise server 12 SP2
4.4.121-92.120.1
fixed
suse enterprise server 12 SP3
4.4.180-94.103.1
fixed
kgraft-patch-4_4_121-92_101-default-7
suse enterprise server 12 SP2
2.5
fixed
kgraft-patch-4_4_121-92_104-default-7
suse enterprise server 12 SP2
2.5
fixed
kgraft-patch-4_4_121-92_109-default-7
suse enterprise server 12 SP2
2.5
fixed
kgraft-patch-4_4_121-92_114-default-6
suse enterprise server 12 SP2
2.1
fixed
kgraft-patch-4_4_121-92_117-default-5
suse enterprise server 12 SP2
2.1
fixed
kgraft-patch-4_4_121-92_120-default-1
suse enterprise server 12 SP2
3.3.1
fixed
kgraft-patch-4_4_175-94_79-default-7
suse enterprise server 12 SP3
2.5
fixed
kgraft-patch-4_4_176-94_88-default-6
suse enterprise server 12 SP3
2.5
fixed
kgraft-patch-4_4_178-94_91-default-6
suse enterprise server 12 SP3
2.5
fixed
kgraft-patch-4_4_180-94_100-default-4
suse enterprise server 12 SP3
2.1
fixed
kgraft-patch-4_4_180-94_103-default-1
suse enterprise server 12 SP3
4.3.1
fixed
kgraft-patch-4_4_180-94_97-default-6
suse enterprise server 12 SP3
2.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
bpftool
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-abi-whitelists
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-bootwrapper
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-debug
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-debug-devel
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-devel
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-doc
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-kdump
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-kdump-devel
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-rt
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-debug
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-debug-devel
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-debug-kvm
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-devel
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-doc
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-kvm
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-trace
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-trace-devel
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-rt-trace-kvm
RHEL 7
0:3.10.0-1062.4.1.rt56.1027.el7
fixed
kernel-tools
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-tools-libs
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kernel-tools-libs-devel
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
kpatch-patch-3
RHEL 7
0:1-3.el7
fixed
perf
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
python-perf
RHEL 7
0:3.10.0-1062.4.1.el7
fixed
Common Weakness Enumeration
References
http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
https://access.redhat.com/errata/RHSA-2019:3055
https://access.redhat.com/errata/RHSA-2019:3076
https://access.redhat.com/errata/RHSA-2019:3089
https://access.redhat.com/errata/RHSA-2019:3217
https://access.redhat.com/errata/RHSA-2020:0100
https://access.redhat.com/errata/RHSA-2020:0103
https://access.redhat.com/errata/RHSA-2020:0543
https://access.redhat.com/errata/RHSA-2020:0664
https://access.redhat.com/errata/RHSA-2020:0698
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24
https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
https://seclists.org/bugtraq/2019/Aug/18
https://seclists.org/bugtraq/2019/Aug/26
https://security.netapp.com/advisory/ntap-20190905-0002/
https://support.f5.com/csp/article/K14673240?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4094-1/
https://usn.ubuntu.com/4116-1/
https://usn.ubuntu.com/4118-1/
https://www.debian.org/security/2019/dsa-4497
http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
https://access.redhat.com/errata/RHSA-2019:3055
https://access.redhat.com/errata/RHSA-2019:3076
https://access.redhat.com/errata/RHSA-2019:3089
https://access.redhat.com/errata/RHSA-2019:3217
https://access.redhat.com/errata/RHSA-2020:0100
https://access.redhat.com/errata/RHSA-2020:0103
https://access.redhat.com/errata/RHSA-2020:0543
https://access.redhat.com/errata/RHSA-2020:0664
https://access.redhat.com/errata/RHSA-2020:0698
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24
https://github.com/torvalds/linux/commit/54648cf1ec2d7f4b6a71767799c45676a138ca24
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
https://seclists.org/bugtraq/2019/Aug/18
https://seclists.org/bugtraq/2019/Aug/26
https://security.netapp.com/advisory/ntap-20190905-0002/
https://support.f5.com/csp/article/K14673240?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4094-1/
https://usn.ubuntu.com/4116-1/
https://usn.ubuntu.com/4118-1/
https://www.debian.org/security/2019/dsa-4497