CVE-2018-17972

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 17%
VendorProductVersion
linuxlinux_kernel
𝑥
≤ 4.18.11
canonicalubuntu_linux
12.04
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
18.10
redhatenterprise_linux_desktop
7.0
redhatenterprise_linux_server
7.0
redhatenterprise_linux_server
7.6
redhatenterprise_linux_server_aus
7.6
redhatenterprise_linux_server_eus
7.6
redhatenterprise_linux_server_tus
7.6
redhatenterprise_linux_workstation
7.0
debiandebian_linux
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
sid
6.11.5-1
fixed
trixie
6.11.5-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
cosmic
Fixed 4.18.0-12.13
released
bionic
Fixed 4.15.0-44.47
released
xenial
Fixed 4.4.0-139.165
released
trusty
Fixed 3.13.0-165.215
released
linux-aws
cosmic
Fixed 4.18.0-1006.7
released
bionic
Fixed 4.15.0-1032.34
released
xenial
Fixed 4.4.0-1072.82
released
trusty
Fixed 4.4.0-1034.37
released
linux-aws-hwe
cosmic
dne
bionic
dne
xenial
Fixed 4.15.0-1032.34~16.04.1
released
trusty
dne
linux-azure
cosmic
Fixed 4.18.0-1006.6
released
bionic
Fixed 4.15.0-1037.39
released
xenial
Fixed 4.15.0-1037.39~16.04.1
released
trusty
Fixed 4.15.0-1037.39~14.04.2
released
linux-azure-edge
cosmic
dne
bionic
Fixed 4.15.0-1037.39
released
xenial
Fixed 4.15.0-1037.39~16.04.1
released
trusty
dne
linux-euclid
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-flo
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-gcp
cosmic
Fixed 4.18.0-1004.5
released
bionic
Fixed 4.15.0-1027.28
released
xenial
Fixed 4.15.0-1027.28~16.04.1
released
trusty
dne
linux-gcp-edge
cosmic
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gke
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-goldfish
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-grouper
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-hwe
cosmic
dne
bionic
not-affected
xenial
Fixed 4.15.0-45.48~16.04.1
released
trusty
dne
linux-hwe-edge
cosmic
dne
bionic
not-affected
xenial
Fixed 4.15.0-45.48~16.04.1
released
trusty
dne
linux-kvm
cosmic
Fixed 4.18.0-1005.5
released
bionic
Fixed 4.15.0-1029.29
released
xenial
Fixed 4.4.0-1037.43
released
trusty
dne
linux-lts-trusty
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-utopic
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-vivid
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-wily
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-xenial
cosmic
dne
bionic
dne
xenial
dne
trusty
Fixed 4.4.0-139.165~14.04.1
released
linux-maguro
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-mako
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-manta
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-oem
cosmic
Fixed 4.15.0-1033.38
released
bionic
Fixed 4.15.0-1033.38
released
xenial
ignored
trusty
dne
linux-oracle
cosmic
not-affected
bionic
Fixed 4.15.0-1008.10
released
xenial
Fixed 4.15.0-1008.10~16.04.1
released
trusty
dne
linux-raspi2
cosmic
Fixed 4.18.0-1007.9
released
bionic
Fixed 4.15.0-1031.33
released
xenial
Fixed 4.4.0-1100.108
released
trusty
dne
linux-snapdragon
cosmic
dne
bionic
not-affected
xenial
Fixed 4.4.0-1104.109
released
trusty
dne
References