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CVE-2020-12351

Published: 14 October 2020

Improper input validation in BlueZ may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access.

From the Ubuntu security team

Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux kernel contained a type-confusion error. A physically proximate remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

AuthorNote
sbeattie
introduced in 4.8 cycle
Priority

High

CVSS 3 base score: 8.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-122.124)
focal
Released (5.4.0-52.57)
groovy Not vulnerable
(5.8.0-25.26)
precise Not vulnerable
(3.0.0-12.20)
trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (5.10~rc1)
xenial Not vulnerable
(4.2.0-16.19)
Patches:
Introduced by

dbb50887c8f619fc5c3489783ebc3122bc134a31

Fixed by f19425641cb2572a33cb074d5e30283720bd4d22
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Not vulnerable
(CONFIG_BT not set)
groovy Not vulnerable
(CONFIG_BT not set)
precise Does not exist

trusty Not vulnerable
(CONFIG_BT not set)
upstream
Released (5.10~rc1)
xenial Not vulnerable
(CONFIG_BT not set)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

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

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Not vulnerable
(CONFIG_BT not set)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Not vulnerable
(CONFIG_BT not set)
groovy Not vulnerable
(CONFIG_BT not set)
precise Does not exist

trusty Not vulnerable
(CONFIG_BT not set)
upstream Not vulnerable
(CONFIG_BT not set)
xenial Not vulnerable
(CONFIG_BT not set)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not set)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(CONFIG_BT not set)
xenial Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Not vulnerable
(cloud-only kernel)
groovy Not vulnerable
(cloud-only kernel)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Not vulnerable
(cloud-only kernel)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic Pending
(5.4.0-1029.31~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic Pending
(5.4.0-1004.5)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

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

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial
Released (4.15.0-122.124~16.04.1)
linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-52.57~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

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

focal Pending
(5.8.0-25.26~20.04.1)
groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

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

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(CONFIG_BT not enabled)
focal Not vulnerable
(CONFIG_BT not enabled)
groovy Not vulnerable
(CONFIG_BT not enabled)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Not vulnerable
(CONFIG_BT not enabled)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

precise Not vulnerable
(3.13.0-24.46~precise1)
trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

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

focal Does not exist

groovy Does not exist

precise Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (5.10~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1100.110)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.6.0-1032.33)
groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1070.76)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Not vulnerable
(cloud-only kernel)
groovy Not vulnerable
(cloud-only kernel)
precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Not vulnerable
(cloud-only kernel)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(cloud-only kernel)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream Not vulnerable
(cloud-only kernel)
xenial Does not exist

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

focal
Released (5.4.0-1022.25)
groovy Not vulnerable
(5.8.0-1006.9)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1022.25~18.04.1)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1074.79)
focal Ignored
(replaced by linux-raspi)
groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Not vulnerable
(4.2.0-1013.19)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1036.38)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

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

focal
Released (5.4.0-37.42)
groovy Not vulnerable
(5.8.0-7.7)
precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1090.99)
focal Does not exist

groovy Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.10~rc1)
xenial Not vulnerable
(4.4.0-1013.15)