CVE-2020-10768

A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being 'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this vulnerability is to confidentiality.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
redhatCNA
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
VendorProductVersion
linuxlinux_kernel
𝑥
< 5.8.0
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
focal
Fixed 5.4.0-45.49
released
eoan
ignored
bionic
Fixed 4.15.0-115.116
released
xenial
Fixed 4.4.0-186.216
released
trusty
ignored
linux-aws
focal
Fixed 5.4.0-1022.22
released
eoan
ignored
bionic
Fixed 4.15.0-1080.84
released
xenial
Fixed 4.4.0-1111.123
released
trusty
Fixed 4.4.0-1075.79
released
linux-aws-5.0
focal
dne
eoan
dne
bionic
ignored
xenial
dne
trusty
dne
linux-aws-5.3
focal
dne
eoan
dne
bionic
Fixed 5.3.0-1032.34~18.04.2
released
xenial
dne
trusty
dne
linux-aws-5.4
focal
dne
bionic
Fixed 5.4.0-1022.22~18.04.1
released
xenial
dne
trusty
dne
linux-aws-hwe
focal
dne
eoan
dne
bionic
dne
xenial
Fixed 4.15.0-1080.84~16.04.1
released
trusty
dne
linux-azure
focal
Fixed 5.4.0-1023.23
released
eoan
ignored
bionic
ignored
xenial
Fixed 4.15.0-1093.103~16.04.1
released
trusty
Fixed 4.15.0-1093.103~14.04.1
released
linux-azure-4.15
focal
dne
eoan
dne
bionic
Fixed 4.15.0-1093.103
released
xenial
dne
trusty
dne
linux-azure-5.3
focal
dne
eoan
dne
bionic
Fixed 5.3.0-1034.35~18.04.1
released
xenial
dne
trusty
dne
linux-azure-5.4
focal
dne
bionic
Fixed 5.4.0-1023.23~18.04.1
released
xenial
dne
trusty
dne
linux-azure-edge
focal
dne
eoan
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gcp
focal
Fixed 5.4.0-1022.22
released
eoan
ignored
bionic
ignored
xenial
Fixed 4.15.0-1081.92~16.04.1
released
trusty
dne
linux-gcp-4.15
focal
dne
eoan
dne
bionic
Fixed 4.15.0-1081.92
released
xenial
dne
trusty
dne
linux-gcp-5.3
focal
dne
eoan
dne
bionic
Fixed 5.3.0-1032.34~18.04.1
released
xenial
dne
trusty
dne
linux-gcp-5.4
focal
dne
bionic
Fixed 5.4.0-1022.22~18.04.1
released
xenial
dne
trusty
dne
linux-gcp-edge
focal
dne
eoan
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gke-4.15
focal
dne
eoan
dne
bionic
Fixed 4.15.0-1067.70
released
xenial
dne
trusty
dne
linux-gke-5.0
focal
dne
eoan
dne
bionic
Fixed 5.0.0-1045.46
released
xenial
dne
trusty
dne
linux-gke-5.3
focal
dne
eoan
dne
bionic
Fixed 5.3.0-1032.34~18.04.1
released
xenial
dne
trusty
dne
linux-hwe
focal
dne
eoan
dne
bionic
Fixed 5.3.0-64.58~18.04.1
released
xenial
Fixed 4.15.0-115.116~16.04.1
released
trusty
dne
linux-hwe-5.4
focal
dne
bionic
Fixed 5.4.0-45.49~18.04.2
released
xenial
dne
trusty
dne
linux-hwe-edge
focal
dne
eoan
dne
bionic
ignored
xenial
ignored
trusty
dne
linux-kvm
focal
Fixed 5.4.0-1021.21
released
eoan
ignored
bionic
Fixed 4.15.0-1072.73
released
xenial
Fixed 4.4.0-1077.84
released
trusty
dne
linux-lts-trusty
focal
dne
eoan
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-xenial
focal
dne
eoan
dne
bionic
dne
xenial
dne
trusty
Fixed 4.4.0-186.216~14.04.1
released
linux-oem
focal
dne
eoan
ignored
bionic
Fixed 4.15.0-1094.104
released
xenial
ignored
trusty
dne
linux-oem-5.6
focal
Fixed 5.6.0-1020.20
released
eoan
dne
bionic
dne
xenial
dne
trusty
dne
linux-oem-osp1
focal
dne
eoan
ignored
bionic
Fixed 5.0.0-1065.70
released
xenial
dne
trusty
dne
linux-oracle
focal
Fixed 5.4.0-1022.22
released
eoan
ignored
bionic
Fixed 4.15.0-1051.55
released
xenial
Fixed 4.15.0-1051.55~16.04.1
released
trusty
dne
linux-oracle-5.0
focal
dne
eoan
dne
bionic
ignored
xenial
dne
trusty
dne
linux-oracle-5.3
focal
dne
eoan
dne
bionic
Fixed 5.3.0-1030.32~18.04.1
released
xenial
dne
trusty
dne
linux-oracle-5.4
focal
dne
bionic
Fixed 5.4.0-1022.22~18.04.1
released
xenial
dne
trusty
dne
linux-raspi
focal
Fixed 5.4.0-1016.17
released
eoan
dne
bionic
dne
xenial
dne
trusty
dne
linux-raspi-5.4
focal
dne
bionic
Fixed 5.4.0-1016.17~18.04.1
released
xenial
dne
trusty
dne
linux-raspi2
focal
ignored
eoan
ignored
bionic
Fixed 4.15.0-1068.72
released
xenial
Fixed 4.4.0-1136.145
released
trusty
dne
linux-raspi2-5.3
focal
dne
eoan
dne
bionic
Fixed 5.3.0-1030.32~18.04.2
released
xenial
dne
trusty
dne
linux-riscv
focal
Fixed 5.4.0-31.35
released
eoan
dne
bionic
dne
xenial
dne
trusty
dne
linux-snapdragon
focal
dne
eoan
dne
bionic
Fixed 4.15.0-1084.92
released
xenial
Fixed 4.4.0-1140.148
released
trusty
dne
Common Weakness Enumeration
References
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10768
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d8df8cbb9156b0a0ab3f802b80cb5db57acc0bf
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10768
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d8df8cbb9156b0a0ab3f802b80cb5db57acc0bf