CVE-2020-8428

EUVD-2020-29295
fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 28%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
4.19 ≤
𝑥
< 5.5
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 4.15.0-96.97
released
eoan
Fixed 5.3.0-46.38
released
focal
not-affected
trusty
not-affected
xenial
Fixed 4.4.0-177.207
released
linux-aws
bionic
Fixed 4.15.0-1065.69
released
eoan
Fixed 5.3.0-1016.17
released
focal
not-affected
trusty
Fixed 4.4.0-1065.69
released
xenial
Fixed 4.4.0-1105.116
released
linux-aws-5.0
bionic
ignored
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-aws-5.3
bionic
not-affected
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-aws-hwe
bionic
dne
eoan
dne
focal
dne
trusty
dne
xenial
Fixed 4.15.0-1065.69~16.04.1
released
linux-azure
bionic
Fixed 5.0.0-1036.38
released
eoan
Fixed 5.3.0-1019.20
released
focal
not-affected
trusty
Fixed 4.15.0-1077.82~14.04.1
released
xenial
Fixed 4.15.0-1077.82
released
linux-azure-4.15
bionic
not-affected
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-azure-5.3
bionic
Fixed 5.3.0-1019.20~18.04.1
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-azure-edge
bionic
ignored
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gcp
bionic
Fixed 5.0.0-1034.35
released
eoan
Fixed 5.3.0-1017.18
released
focal
not-affected
trusty
dne
xenial
Fixed 4.15.0-1060.64
released
linux-gcp-5.3
bionic
Fixed 5.3.0-1017.18~18.04.1
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gcp-edge
bionic
ignored
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gke-4.15
bionic
Fixed 4.15.0-1057.60
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gke-5.0
bionic
Fixed 5.0.0-1033.34
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gke-5.3
bionic
Fixed 5.3.0-1017.18~18.04.1
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-hwe
bionic
Fixed 5.3.0-46.38~18.04.1
released
eoan
dne
focal
dne
trusty
dne
xenial
Fixed 4.15.0-96.97~16.04.1
released
linux-hwe-edge
bionic
ignored
eoan
dne
focal
dne
trusty
dne
xenial
ignored
linux-kvm
bionic
Fixed 4.15.0-1058.59
released
eoan
Fixed 5.3.0-1015.16
released
focal
not-affected
trusty
dne
xenial
Fixed 4.4.0-1069.76
released
linux-lts-trusty
bionic
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-lts-xenial
bionic
dne
eoan
dne
focal
dne
trusty
Fixed 4.4.0-177.207~14.04.1
released
xenial
dne
linux-oem
bionic
Fixed 4.15.0-1079.89
released
eoan
Fixed 4.15.0-1079.89
released
focal
dne
trusty
dne
xenial
ignored
linux-oem-5.6
bionic
dne
eoan
dne
focal
not-affected
trusty
dne
xenial
dne
linux-oem-osp1
bionic
Fixed 5.0.0-1047.52
released
eoan
Fixed 5.0.0-1047.52
released
focal
dne
trusty
dne
xenial
dne
linux-oracle
bionic
Fixed 4.15.0-1037.41
released
eoan
Fixed 5.3.0-1014.15
released
focal
not-affected
trusty
dne
xenial
Fixed 4.15.0-1037.41~16.04.1
released
linux-oracle-5.0
bionic
Fixed 5.0.0-1014.19
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-oracle-5.3
bionic
Fixed 5.3.0-1014.15~18.04.1
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-raspi
bionic
dne
eoan
dne
focal
not-affected
trusty
dne
xenial
dne
linux-raspi2
bionic
Fixed 4.15.0-1060.64
released
eoan
Fixed 5.3.0-1022.24
released
focal
ignored
trusty
dne
xenial
Fixed 4.4.0-1131.140
released
linux-raspi2-5.3
bionic
Fixed 5.3.0-1022.24~18.04.1
released
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-riscv
bionic
dne
eoan
dne
focal
not-affected
trusty
dne
xenial
dne
linux-snapdragon
bionic
Fixed 4.15.0-1076.83
released
eoan
dne
focal
dne
trusty
dne
xenial
Fixed 4.4.0-1135.143
released
Common Weakness Enumeration
References
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
http://www.openwall.com/lists/oss-security/2020/01/28/4
http://www.openwall.com/lists/oss-security/2020/02/02/1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6
https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://security.netapp.com/advisory/ntap-20200313-0003/
https://usn.ubuntu.com/4318-1/
https://usn.ubuntu.com/4319-1/
https://usn.ubuntu.com/4320-1/
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4325-1/
https://www.debian.org/security/2020/dsa-4667
https://www.debian.org/security/2020/dsa-4698
https://www.openwall.com/lists/oss-security/2020/01/28/2
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
http://www.openwall.com/lists/oss-security/2020/01/28/4
http://www.openwall.com/lists/oss-security/2020/02/02/1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6
https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://security.netapp.com/advisory/ntap-20200313-0003/
https://usn.ubuntu.com/4318-1/
https://usn.ubuntu.com/4319-1/
https://usn.ubuntu.com/4320-1/
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4325-1/
https://www.debian.org/security/2020/dsa-4667
https://www.debian.org/security/2020/dsa-4698
https://www.openwall.com/lists/oss-security/2020/01/28/2