CVE-2019-16234

Published: 11 September 2019

drivers/net/wireless/intel/iwlwifi/pcie/trans.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value, leading to a NULL pointer dereference.

From the Ubuntu Security Team

It was discovered that the Intel Wi-Fi driver in the Linux kernel did not properly check for errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash).

Priority

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package	Release	Status
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1066.70)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1017.18)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Released (4.4.0-1066.70) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.4~rc4)
	xenial	Released (4.4.0-1106.117)
linux-aws-5.3 Launchpad, Ubuntu, Debian	eoan	Does not exist
	bionic	Released (5.3.0-1017.18~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-99.100)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-51.44)
	focal	Not vulnerable (5.4.0-9.12)
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (5.4~rc4)
	xenial	Released (4.4.0-178.208)
	Patches: Introduced by 26d535aedc0e9fcf2c8bee65b33cecb58ee8e8ed Fixed by 8188a18ee2e48c9a7461139838048363bfce3fef
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
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	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
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.15.0-1066.70~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needed)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1020.21)
	focal	Not vulnerable (5.4.0-1006.6)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.4~rc4)
	xenial	Released (4.15.0-1082.92~16.04.1)
linux-azure-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1082.92)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1020.21~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	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
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needed)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1018.19)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.15.0-1061.65)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1071.81)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1018.19~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	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
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1058.61)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1035.36)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1018.19~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-51.44~18.04.2)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.15.0-99.100~16.04.1)
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
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1059.60)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1016.17)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.4.0-1070.77)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	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
	trusty	Released (4.4.0-178.208~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1080.90)
	disco	Ignored (end of life)
	eoan	Ignored (end of life, was pending)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.6.0-1007.7)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1050.55)
	disco	Ignored (end of life)
	eoan	Ignored (end of life, was pending)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1038.42)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1016.18)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.15.0-1038.42~16.04.1)
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
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1016.18~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.4.0-1007.7)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1061.65)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1023.25)
	focal	Ignored (end of life, was needed)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.4.0-1132.141)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1023.25~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.4.0-24.28)
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1077.84)
	disco	Ignored (end of life)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc4)
	xenial	Released (4.4.0-1136.144)

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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