CVE-2019-19078

Published: 18 November 2019

A memory leak in the ath10k_usb_hif_tx_sg() function in drivers/net/wireless/ath/ath10k/usb.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering usb_submit_urb() failures, aka CID-b8d17e7d93d2.

From the Ubuntu Security Team

It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion).

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-88.88)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-40.32)
	focal	Not vulnerable (5.4.0-9.12)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.5~rc1)
	xenial	Not vulnerable (4.2.0-16.19)
	Patches: Introduced by 4db66499df91b9398435e2dbee0e42cd6df0bc27 Fixed by b8d17e7d93d2beb89e4f34c59996376b8b544792
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1060.62)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-1011.12)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.5~rc1)
	xenial	Not vulnerable (4.4.0-1001.10)
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1024.27~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1016.17~18.04.1)
	eoan	Does not exist
	focal	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
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-1060.62~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1029.31~18.04.1)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-1013.14)
	focal	Not vulnerable (5.4.0-1006.6)
	trusty	Released (4.15.0-1071.76~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-1071.76)
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 (5.5~rc1)
	xenial	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1013.14~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	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
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1029.30~18.04.1)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-1012.13)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-1055.59)
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 (5.5~rc1)
	xenial	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1012.13~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	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
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1052.55)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1029.30~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1012.13~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-40.32~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-88.88~16.04.1)
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 (5.5~rc1)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1053.53)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-1010.11)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Not vulnerable (4.4.0-1004.9)
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 (5.5~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
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1073.83)
	disco	Ignored (end of life)
	eoan	Ignored (end of life, was pending)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	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 (5.5~rc1)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1037.42)
	disco	Ignored (end of life)
	eoan	Released (5.0.0-1037.42)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1033.36)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-1009.10)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Released (4.15.0-1033.36~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1010.15~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	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	Not vulnerable (5.4.0-1007.7)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1055.59)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-1018.20)
	focal	Ignored (end of life, was needed)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Not vulnerable (4.2.0-1013.19)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1018.20~18.04.1)
	eoan	Does not exist
	focal	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	Not vulnerable (5.4.0-24.28)
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1072.79)
	disco	Ignored (end of life, was pending)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc1)
	xenial	Not vulnerable (4.4.0-1013.15)

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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