CVE-2020-25220

The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/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: 25%
VendorProductVersion
linuxlinux_kernel
4.9.0 ≤
𝑥
< 4.9.233
linuxlinux_kernel
4.14 ≤
𝑥
< 4.14.194
linuxlinux_kernel
4.19 ≤
𝑥
< 4.19.140
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
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
groovy
not-affected
focal
not-affected
bionic
Fixed 4.15.0-118.119
released
xenial
not-affected
trusty
ignored
linux-aws
groovy
not-affected
focal
not-affected
bionic
Fixed 4.15.0-1083.87
released
xenial
not-affected
trusty
ignored
linux-aws-5.0
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-aws-5.3
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-aws-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-aws-hwe
groovy
dne
focal
dne
bionic
dne
xenial
Fixed 4.15.0-1083.87~16.04.1
released
trusty
dne
linux-azure
groovy
not-affected
focal
not-affected
bionic
ignored
xenial
Fixed 4.15.0-1096.106~16.04.1
released
trusty
ignored
linux-azure-4.15
groovy
dne
focal
dne
bionic
Fixed 4.15.0-1096.106
released
xenial
dne
trusty
dne
linux-azure-5.3
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-azure-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-azure-edge
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gcp
groovy
not-affected
focal
not-affected
bionic
ignored
xenial
Fixed 4.15.0-1084.95~16.04.1
released
trusty
dne
linux-gcp-4.15
groovy
dne
focal
dne
bionic
Fixed 4.15.0-1084.95
released
xenial
dne
trusty
dne
linux-gcp-5.3
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gcp-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gcp-edge
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gke-4.15
groovy
dne
focal
dne
bionic
Fixed 4.15.0-1070.73
released
xenial
dne
trusty
dne
linux-gke-5.0
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gke-5.3
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-hwe
groovy
dne
focal
dne
bionic
not-affected
xenial
Fixed 4.15.0-118.119~16.04.1
released
trusty
dne
linux-hwe-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-hwe-edge
groovy
dne
focal
dne
bionic
ignored
xenial
ignored
trusty
dne
linux-kvm
groovy
not-affected
focal
not-affected
bionic
Fixed 4.15.0-1075.76
released
xenial
not-affected
trusty
dne
linux-lts-trusty
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-xenial
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
ignored
linux-oem
groovy
dne
focal
dne
bionic
Fixed 4.15.0-1097.107
released
xenial
ignored
trusty
dne
linux-oem-5.6
groovy
dne
focal
not-affected
bionic
dne
xenial
dne
trusty
dne
linux-oem-osp1
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-oracle
groovy
not-affected
focal
not-affected
bionic
Fixed 4.15.0-1054.58
released
xenial
Fixed 4.15.0-1054.58~16.04.1
released
trusty
dne
linux-oracle-5.0
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-oracle-5.3
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-oracle-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-raspi
groovy
not-affected
focal
not-affected
bionic
dne
xenial
dne
trusty
dne
linux-raspi-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-raspi2
groovy
dne
focal
ignored
bionic
Fixed 4.15.0-1071.75
released
xenial
not-affected
trusty
dne
linux-raspi2-5.3
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-riscv
groovy
not-affected
focal
not-affected
bionic
dne
xenial
dne
trusty
dne
linux-snapdragon
groovy
dne
focal
dne
bionic
Fixed 4.15.0-1087.95
released
xenial
not-affected
trusty
dne
Common Weakness Enumeration
References
https://bugzilla.redhat.com/show_bug.cgi?id=1868453
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
https://security.netapp.com/advisory/ntap-20201001-0004/
https://www.spinics.net/lists/stable/msg405099.html
https://bugzilla.redhat.com/show_bug.cgi?id=1868453
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
https://security.netapp.com/advisory/ntap-20201001-0004/
https://www.spinics.net/lists/stable/msg405099.html