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CVE-2020-11935

Published: 29 June 2020

It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.

From the Ubuntu security team

Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service.

Priority

Medium

Status

Package Release Status
linux-aws-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
groovy Does not exist

hirsute Does not exist

upstream Needs triage

impish Does not exist

jammy Does not exist

linux-azure-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

upstream Needs triage

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux-gcp-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

upstream Needs triage

focal Ignored
(was needs-triage now end-of-life)
impish Does not exist

jammy Does not exist

linux-oracle-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

upstream Needs triage

focal Ignored
(was needs-triage now end-of-life)
impish Does not exist

jammy Does not exist

linux-riscv-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

upstream Needs triage

focal Ignored
(was needs-triage now end-of-life)
impish Does not exist

jammy Does not exist

linux-aws-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
hirsute Does not exist

upstream Needs triage

impish Does not exist

jammy Does not exist

linux-azure-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
hirsute Does not exist

upstream Needs triage

impish Does not exist

jammy Does not exist

linux-oracle-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

upstream Needs triage

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux
Launchpad, Ubuntu, Debian
upstream Not vulnerable
(code not upstream)
precise Ignored
(was needs-triage ESM criteria)
trusty Ignored
(was needs-triage ESM criteria)
xenial
Released (4.4.0-186.216)
bionic
Released (4.15.0-112.113)
eoan Ignored
(reached end-of-life)
impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-42.46)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-hwe
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-112.113~16.04.1)
bionic
Released (5.3.0-64.58~18.04.1)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Ignored
(was needs-triage now end-of-life)
bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Ignored
(was needs-triage ESM criteria)
trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty
Released (4.4.0-186.216~14.04.1)
xenial Does not exist

bionic Does not exist

eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.4.0-1077.84)
bionic
Released (4.15.0-1071.72)
eoan Ignored
(reached end-of-life)
impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-1020.20)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-aws
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty
Released (4.4.0-1075.79)
xenial
Released (4.4.0-1111.123)
bionic
Released (4.15.0-1079.83)
eoan Ignored
(reached end-of-life)
impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-1020.20)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-aws-5.0
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.3.0-1032.34~18.04.2)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-1079.83~16.04.1)
bionic Does not exist

eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-azure
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Ignored
(was needs-triage ESM criteria)
xenial
Released (4.15.0-1092.102~16.04.1)
bionic Ignored
(was needs-triage now end-of-life)
eoan Ignored
(reached end-of-life)
impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-1022.22)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-azure-4.15
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (4.15.0-1092.102)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.3.0-1034.35~18.04.1)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-1080.90~16.04.1)
bionic Ignored
(was needs-triage now end-of-life)
eoan Ignored
(reached end-of-life)
impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-1021.21)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-gcp-4.15
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (4.15.0-1080.90)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.3.0-1032.34~18.04.1)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (4.15.0-1066.69)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.0.0-1045.46)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.3.0-1032.34~18.04.1)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-1050.54~16.04.1)
bionic
Released (4.15.0-1050.54)
eoan Ignored
(reached end-of-life)
impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-1021.21)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-oracle-5.0
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Ignored
(was needs-triage now end-of-life)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.3.0-1030.32~18.04.1)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-oem
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Ignored
(was needs-triage now end-of-life)
bionic
Released (4.15.0-1093.103)
eoan Ignored
(reached end-of-life)
focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

focal Ignored
(was needs-triage now end-of-life)
impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.0.0-1065.70)
eoan Ignored
(reached end-of-life)
focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-1015.15)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-raspi2
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.4.0-1136.145)
bionic
Released (4.15.0-1067.71)
eoan Ignored
(reached end-of-life)
impish Does not exist

hirsute Does not exist

focal Ignored
(was needs-triage now end-of-life)
groovy Does not exist

jammy Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.3.0-1030.32~18.04.2)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

impish Needs triage

hirsute Ignored
(reached end-of-life)
focal
Released (5.4.0-30.34)
groovy Ignored
(reached end-of-life)
jammy Needs triage

linux-snapdragon
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial
Released (4.4.0-1140.148)
bionic
Released (4.15.0-1083.91)
eoan Does not exist

focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.4.0-42.46~18.04.1)
focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.4.0-1015.15~18.04.1)
focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (5.4.0-1022.22~18.04.1)
focal Does not exist

impish Does not exist

hirsute Does not exist

groovy Does not exist

jammy Does not exist

linux-bluefield
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable

hirsute Does not exist

upstream Needs triage

impish Does not exist

jammy Does not exist

linux-hwe-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

upstream Needs triage

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

upstream Needs triage

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

hirsute Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

groovy Does not exist

jammy Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

hirsute Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

groovy Does not exist

jammy Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

hirsute Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

groovy Does not exist

jammy Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
impish Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
groovy Does not exist

hirsute Does not exist

jammy Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
impish Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
impish Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

linux-oem-5.10
Launchpad, Ubuntu, Debian
impish Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
groovy Does not exist

hirsute Does not exist

jammy Does not exist

linux-gkeop
Launchpad, Ubuntu, Debian
impish Does not exist

upstream Needs triage

precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable

groovy Does not exist

hirsute Does not exist

jammy Does not exist

linux-gke
Launchpad, Ubuntu, Debian
impish Does not exist

precise Does not exist

trusty Does not exist

xenial Ignored
(out of standard support)
bionic Does not exist

focal Not vulnerable

groovy Does not exist

hirsute Does not exist

upstream Needs triage

jammy Needs triage

linux-ibm
Launchpad, Ubuntu, Debian
impish Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable

hirsute Does not exist

upstream Needs triage

jammy Needs triage

linux-gcp-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
hirsute Does not exist

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-oem-5.14
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

hirsute Does not exist

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-intel-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

upstream Needs triage

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

linux-azure-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-hwe-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-aws-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-oracle-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-gcp-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Needs triage

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Not vulnerable

focal Does not exist

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-azure-fde
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Not vulnerable

impish Does not exist

upstream Needs triage

jammy Does not exist

linux-lowlatency
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

impish Does not exist

jammy Needs triage

upstream Needs triage

linux-oem-5.17
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

impish Does not exist

jammy Needs triage

upstream Needs triage