CVE-2018-20169

Published: 17 December 2018

An issue was discovered in the Linux kernel before 4.19.9. The USB subsystem mishandles size checks during the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c.

From the Ubuntu security team

Hui Peng and Mathias Payer discovered that the USB subsystem in the Linux kernel did not properly handle size checks when handling an extra USB descriptor. A physically proximate attacker could use this to cause a denial of service (system crash).

Priority

CVSS 3 base score: 6.8

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-58.64)
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (4.19.0-12.13)
	precise	Ignored (was needs-triage ESM criteria)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (4.20~rc6)
	xenial	Released (4.4.0-142.168)
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1047.49)
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (5.0.0-1001.1)
	precise	Does not exist
	trusty	Released (4.4.0-1038.41)
	upstream	Released (4.20~rc6)
	xenial	Released (4.4.0-1075.85)
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-1047.49~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1014.14~18.04.1)
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (5.0.0-1001.1)
	precise	Does not exist
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-1055.60)
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1014.14~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-1055.60)
linux-euclid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Ignored (was needs-triage ESM criteria)
linux-flo Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.20~rc6)
	xenial	Ignored (abandoned)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1040.42)
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (5.0.0-1001.1)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-1040.42~16.04.1)
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1040.42)
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Ignored (end-of-life)
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1040.42)
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1011.11~18.04.1)
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.20~rc6)
	xenial	Ignored (end-of-life)
linux-grouper Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-23.24~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-58.64~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-15.16~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-58.64~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1042.42)
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (5.0.0-1001.1)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.4.0-1040.46)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Ignored (was needs-triage ESM criteria)
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end-of-life])
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end-of-life])
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end-of-life])
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Released (4.4.0-142.168~14.04.1)
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.20~rc6)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.20~rc6)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1050.57)
	cosmic	Ignored (reached end-of-life)
	disco	Released (4.15.0-1050.57)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Ignored (was needs-triage now end-of-life)
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1021.23)
	cosmic	Ignored (reached end-of-life)
	disco	Released (5.0.0-1004.8)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.15.0-1021.23~16.04.1)
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1043.46)
	cosmic	Ignored (reached end-of-life)
	disco	Not vulnerable (5.0.0-1004.4)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.4.0-1103.111)
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1060.66)
	cosmic	Does not exist
	disco	Not vulnerable (5.0.0-1010.10)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.20~rc6)
	xenial	Released (4.4.0-1107.112)

Notes

Author	Note
tyhicks	This issue requires physical access and, therefore, is being rated as a low priority issue

References

Bugs

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