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CVE-2021-3739

Published: 27 August 2021

A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.

From the Ubuntu security team

It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service.

Priority

Low

CVSS 3 base score: 7.1

Status

Package Release Status
linux-gcp-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

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

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Ignored
(reached end of standard support)
impish Does not exist

focal
Released (5.4.0-1055.58)
jammy Needs triage

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1055.58~18.04.1)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

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

focal
Released (5.4.0-1026.27)
hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1026.27~18.04.1)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic
Released (5.4.0-1057.61~18.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Ignored
(superseded by linux-hwe)
impish Does not exist

jammy Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

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

focal
Released (5.10.0-1050.52)
hirsute Does not exist

upstream
Released (5.15~rc1)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

trusty Does not exist

xenial Does not exist

impish Not vulnerable
(5.13.0-1008.9)
focal
Released (5.4.0-1046.50)
hirsute
Released (5.11.0-1021.22)
upstream
Released (5.15~rc1)
jammy Not vulnerable
(5.13.0-1008.9)
linux-raspi2
Launchpad, Ubuntu, Debian
focal Ignored
(replaced by linux-raspi)
hirsute Does not exist

trusty Does not exist

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

bionic Not vulnerable
(4.13.0-1005.5)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic
Released (5.4.0-1046.50~18.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.8)
trusty Does not exist

xenial Does not exist

impish Not vulnerable
(5.13.0-1004.4)
hirsute
Released (5.11.0-1021.22)
upstream
Released (5.15~rc1)
jammy Not vulnerable
(5.13.0-1004.4)
linux-riscv-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal
Released (5.11.0-1021.22~20.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

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

bionic Not vulnerable
(4.4.0-1077.82)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

impish Does not exist

xenial Not vulnerable
(4.8.0-39.42~16.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic
Released (5.4.0-90.101~18.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
focal Ignored
(was pending [5.8.0-67.75] now end-of-life)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal
Released (5.11.0-38.42~20.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-hwe-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Ignored
(superseded by linux-hwe)
impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Does not exist

xenial Does not exist

impish Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic
Released (5.4.0-1059.62~18.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-aws-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Does not exist

trusty Does not exist

impish Does not exist

xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
impish Not vulnerable
(5.13.0-1006.7)
hirsute
Released (5.11.0-1020.21)
focal
Released (5.4.0-1063.66)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial Not vulnerable
(4.11.0-1009.9)
upstream
Released (5.15~rc1)
jammy Not vulnerable
(5.13.0-1006.7)
linux-azure-4.15
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Not vulnerable
(4.15.0-1082.92)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic
Released (5.4.0-1063.66~18.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was pending [5.8.0-1043.46~20.04.1] now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal
Released (5.4.0-1021.24)
upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Not vulnerable
(4.15.0-1005.8)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
trusty Does not exist

impish Not vulnerable
(5.13.0-1005.6)
focal
Released (5.4.0-1057.61)
hirsute
Released (5.11.0-1021.23)
xenial Not vulnerable
(4.10.0-1004.4)
upstream
Released (5.15~rc1)
jammy Not vulnerable
(5.13.0-1005.6)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Not vulnerable
(4.15.0-1071.81)
upstream
Released (5.15~rc1)
jammy Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

bionic
Released (5.4.0-1057.61~18.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

linux
Launchpad, Ubuntu, Debian
impish Not vulnerable
(5.13.0-19.19)
bionic Not vulnerable
(4.13.0-16.19)
focal
Released (5.4.0-90.101)
trusty Not vulnerable
(3.11.0-12.19)
xenial Not vulnerable
(4.4.0-2.16)
upstream
Released (5.15~rc1)
hirsute
Released (5.11.0-38.42)
jammy Not vulnerable
(5.13.0-19.19)
linux-kvm
Launchpad, Ubuntu, Debian
trusty Does not exist

impish Not vulnerable
(5.13.0-1003.3)
bionic Not vulnerable
(4.15.0-1002.2)
focal
Released (5.4.0-1049.51)
hirsute
Released (5.11.0-1018.19)
xenial Not vulnerable
(4.4.0-1004.9)
upstream
Released (5.15~rc1)
jammy Not vulnerable
(5.13.0-1004.4)
linux-aws
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(4.4.0-1002.2)
impish Not vulnerable
(5.13.0-1005.6)
bionic Not vulnerable
(4.15.0-1001.1)
focal
Released (5.4.0-1059.62)
xenial Not vulnerable
(4.4.0-1001.10)
upstream
Released (5.15~rc1)
hirsute
Released (5.11.0-1020.21)
jammy Not vulnerable
(5.13.0-1005.6)
linux-oracle
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
impish Not vulnerable
(5.13.0-1008.10)
bionic Not vulnerable
(4.15.0-1007.9)
upstream
Released (5.15~rc1)
focal
Released (5.4.0-1057.61)
hirsute
Released (5.11.0-1020.21)
jammy Not vulnerable
(5.13.0-1008.10)
linux-oem-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
focal
Released (5.13.0-1017.21)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
focal
Released (5.11.0-1020.21~20.04.2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.15~rc1)
focal
Released (5.11.0-1020.21~20.04.1)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

focal
Released (5.11.0-1020.21~20.04.1)
hirsute Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

focal
Released (5.4.0-1007.8)
hirsute Does not exist

upstream
Released (5.15~rc1)
jammy Not vulnerable
(5.15.0-1002.2)
linux-gcp-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal
Released (5.11.0-1021.23~20.04.1)
hirsute Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal Not vulnerable
(5.14.0-1004.4)
upstream
Released (5.15~rc1)
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

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(5.13.0-1009.10~20.04.2)
impish Does not exist

upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-21.21~20.04.1)
upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1008.9~20.04.2)
upstream
Released (5.15~rc1)
jammy Does not exist

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

bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
xenial Not vulnerable
(4.4.0-1073.79)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1011.13~20.04.2)
upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1008.9~20.04.3)
upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

focal Does not exist

impish Does not exist

bionic Not vulnerable
(5.4.0-1010.11~18.04.2)
upstream
Released (5.15~rc1)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

upstream
Released (5.15~rc1)
focal Not vulnerable
(5.4.0-1063.66+cvm2.2)
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 Not vulnerable

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 Not vulnerable

upstream Needs triage