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

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-118.119)
	disco	Ignored (end of life)
	eoan	Ignored (end of life)
	focal	Released (5.4.0-48.52)
	groovy	Not vulnerable (5.8.0-16.17)
	hirsute	Not vulnerable (5.8.0-36.40+21.04.1)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.5~rc1)
	xenial	Released (4.4.0-190.220)
	Patches: Introduced by 1a0b9d89c62ddf0aed12798686fe452e7e97de42 Fixed by a7b2df76b42bdd026e3106cf2ba97db41345a177
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1083.87)
	disco	Ignored (end of life)
	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-aws-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.11.0-1009.9~20.04.2)
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
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-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-1035.37~20.04.1)
	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 Launchpad, Ubuntu, Debian	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)
	hirsute	Not vulnerable (5.8.0-1016.17+21.04.1)
	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-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-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.11.0-1007.7~20.04.2)
	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-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-1033.35~20.04.1)
	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-bluefield Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.4.0-1007.10)
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-dell300x Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1005.8)
	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 Launchpad, Ubuntu, Debian	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)
	hirsute	Not vulnerable (5.8.0-1015.15+21.04.1)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-1084.95~16.04.1)
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-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-gcp-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-1032.34~20.04.1)
	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 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.4.0-1033.35)
	groovy	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Ignored (end of standard support)
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-gke-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (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-gkeop Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.4.0-1008.9)
	groovy	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1001.1)
	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 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	Released (4.15.0-118.119~16.04.1)
linux-hwe-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.11.0-22.23~20.04.1)
	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-hwe-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-23.24~20.04.1)
	groovy	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
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
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	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
	upstream	Released (5.5~rc1)
	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
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	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
	hirsute	Does not exist
	trusty	Released (4.4.0-190.220~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1097.107)
	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	Ignored (end of standard support, was needs-triage)
linux-oem-5.10 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.10.0-1008.9)
	groovy	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
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-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 Launchpad, Ubuntu, Debian	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)
	hirsute	Not vulnerable (5.8.0-1014.14+21.04.1)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-1054.58~16.04.1)
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-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.11.0-1008.8~20.04.1)
	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-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-oracle-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-1031.32~20.04.2)
	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-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-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Released (5.4.0-34.38)
	groovy	Not vulnerable (5.8.0-1.1)
	hirsute	Not vulnerable (5.8.0-10.12+21.04.1)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-riscv-5.11 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.11.0-1015.16~20.04.1)
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-riscv-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-14.16~20.04.1)
	groovy	Does not exist
	hirsute	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
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

References

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