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CVE-2019-19054

Published: 18 November 2019

A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b.

From the Ubuntu Security Team

It was discovered that the Conexant 23885 TV card device driver for the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion).

Priority

Low

Cvss 3 Severity Score

4.7

Score breakdown

Status

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

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.8.0-1035.37~20.04.1)
upstream
Released (5.5~rc1)
linux-azure-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

xenial Does not exist

focal Not vulnerable
(5.8.0-1033.35~20.04.1)
upstream
Released (5.5~rc1)
linux-gcp-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.8.0-1032.34~20.04.1)
upstream
Released (5.5~rc1)
linux-oracle-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.8.0-1031.32~20.04.2)
upstream
Released (5.5~rc1)
linux-riscv-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

trusty Does not exist

xenial Does not exist

groovy Does not exist

hirsute Does not exist

focal Not vulnerable
(5.8.0-14.16~20.04.1)
upstream
Released (5.5~rc1)
linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1025.25~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1025.25~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-hwe-5.11
Launchpad, Ubuntu, Debian
focal Not vulnerable
(5.11.0-22.23~20.04.1)
upstream
Released (5.5~rc1)
hirsute Does not exist

bionic Does not exist

trusty Does not exist

xenial Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
focal Not vulnerable
(5.11.0-1015.16~20.04.1)
upstream
Released (5.5~rc1)
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.11.0-1009.9~20.04.2)
upstream
Released (5.5~rc1)
linux-azure-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.11.0-1007.7~20.04.2)
upstream
Released (5.5~rc1)
linux-oem-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable
(5.13.0-1009.10)
hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

focal Not vulnerable
(5.11.0-1008.8~20.04.1)
upstream
Released (5.5~rc1)
hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support, was needed)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

hirsute Does not exist

trusty Does not exist

focal Not vulnerable
(5.4.0-1007.10)
upstream
Released (5.5~rc1)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-10.12+21.04.1)
bionic Does not exist

eoan Does not exist

focal
Released (5.4.0-34.38)
groovy Not vulnerable
(5.8.0-1.1)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1025.25~18.04.1)
upstream
Released (5.5~rc1)
linux-hwe-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.8.0-23.24~20.04.1)
upstream
Released (5.5~rc1)
linux-gkeop-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

groovy Does not exist

trusty Does not exist

xenial Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1001.1)
upstream
Released (5.5~rc1)
linux-azure
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1016.17+21.04.1)
bionic Ignored
(end of life, was needed)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal
Released (5.4.0-1026.26)
groovy Not vulnerable
(5.8.0-1004.4)
trusty
Released (4.15.0-1096.106~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1096.106~16.04.1)
linux-gcp
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1015.15+21.04.1)
bionic Ignored
(end of life, was needed)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal
Released (5.4.0-1025.25)
groovy Not vulnerable
(5.8.0-1002.2)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1084.95~16.04.1)
linux-oracle
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1014.14+21.04.1)
bionic
Released (4.15.0-1054.58)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal
Released (5.4.0-1025.25)
groovy Not vulnerable
(5.8.0-1001.1)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1054.58~16.04.1)
linux
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-36.40+21.04.1)
disco Ignored
(end of life)
eoan Ignored
(end of life)
groovy Not vulnerable
(5.8.0-16.17)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.5~rc1)
bionic
Released (4.15.0-118.119)
focal
Released (5.4.0-48.52)
xenial
Released (4.4.0-190.220)
Patches:
Introduced by

1a0b9d89c62ddf0aed12798686fe452e7e97de42

Fixed by a7b2df76b42bdd026e3106cf2ba97db41345a177
linux-dell300x
Launchpad, Ubuntu, Debian
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(4.15.0-1005.8)
upstream
Released (5.5~rc1)
linux-gkeop
Launchpad, Ubuntu, Debian
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.4.0-1008.9)
upstream
Released (5.5~rc1)
linux-oem-5.10
Launchpad, Ubuntu, Debian
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

focal Not vulnerable
(5.10.0-1008.9)
upstream
Released (5.5~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

xenial
Released (4.15.0-118.119~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Ignored
(end of life, was needs-triage)
hirsute Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
upstream
Released (5.5~rc1)
bionic
Released (4.15.0-1075.76)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal
Released (5.4.0-1024.24)
groovy Not vulnerable
(5.8.0-1001.1)
hirsute Not vulnerable
(5.8.0-1010.11+21.04.1)
trusty Does not exist

xenial
Released (4.4.0-1080.87)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

hirsute Does not exist

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

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

hirsute Does not exist

trusty
Released (4.4.0-190.220~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
linux-oem
Launchpad, Ubuntu, Debian
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Does not exist

groovy Does not exist

bionic
Released (4.15.0-1097.107)
hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Ignored
(end of standard support, was needs-triage)
linux-aws
Launchpad, Ubuntu, Debian
disco Ignored
(end of life)
bionic
Released (4.15.0-1083.87)
eoan Ignored
(end of life)
focal
Released (5.4.0-1025.25)
groovy Not vulnerable
(5.8.0-1004.4)
hirsute Not vulnerable
(5.8.0-1018.20+21.04.1)
trusty
Released (4.4.0-1078.82)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1114.127)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

groovy Does not exist

hirsute Does not exist

trusty Does not exist

focal Not vulnerable
(5.4.0-1033.35)
upstream
Released (5.5~rc1)
xenial Ignored
(end of standard support)
linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1025.25~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1083.87~16.04.1)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1096.106)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1026.26~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1084.95)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1070.73)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support, was needed)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-48.52~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

eoan Does not exist

focal Not vulnerable
(5.6.0-1007.7)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support, was needed)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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

eoan Does not exist

focal
Released (5.4.0-1019.21)
groovy Not vulnerable
(5.8.0-1002.5)
hirsute Not vulnerable
(5.8.0-1008.11+21.04.1)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1019.21~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1071.75)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Ignored
(end of life, was needed)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1139.148)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1087.95)
disco Ignored
(end of life)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1143.152)

Severity score breakdown

Parameter Value
Base score 4.7
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H