CVE-2018-7191

Published: 17 May 2019

In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343.

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-10.11)
	cosmic	Not vulnerable (4.15.0-20.21)
	disco	Not vulnerable (4.18.0-10.11)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (4.14~rc7)
	xenial	Released (4.4.0-119.143)
	Patches: Introduced by 96442e42429e5f268ab97a3586c7694a3acc55a7 Fixed by 0ad646c81b2182f7fa67ec0c8c825e0ee165696d Introduced by 96442e42429e5f268ab97a3586c7694a3acc55a7 Fixed by 5c25f65fd1e42685f7ccd80e0621829c105785d9
linux-aws Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	cosmic	Not vulnerable (4.15.0-1007.7)
	disco	Not vulnerable (4.18.0-1002.3)
	trusty	Released (4.4.0-1016.16) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (4.14~rc7)
	xenial	Released (4.4.0-1054.63)
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Not vulnerable (4.15.0-1030.31~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	cosmic	Not vulnerable (4.15.0-1009.9)
	disco	Not vulnerable (4.18.0-1003.3)
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.14~rc7)
	xenial	Released (4.13.0-1011.14)
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.13.0-1011.14)
linux-euclid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Ignored (end of life, was needs-triage)
linux-flo Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Ignored (abandoned)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	cosmic	Not vulnerable (4.15.0-1006.6)
	disco	Not vulnerable (4.18.0-1002.3)
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.13.0-1011.15)
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.18.0-1004.5~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Ignored (end of standard support)
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1030.32)
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Ignored (end of life)
linux-grouper Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.18.0-13.14~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.13.0-36.40~16.04.1)
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
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.13.0-36.40~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	cosmic	Not vulnerable (4.15.0-1008.8)
	disco	Not vulnerable (4.18.0-1003.3)
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.4.0-1020.25)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Released (4.4.0-119.143~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.3)
	cosmic	Not vulnerable (4.15.0-1004.5)
	disco	Not vulnerable (4.15.0-1021.24)
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oracle Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1007.9)
	cosmic	Not vulnerable (4.15.0-1007.9)
	disco	Not vulnerable (4.15.0-1007.9)
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Not vulnerable (4.15.0-1007.9~16.04.1)
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1006.7)
	cosmic	Not vulnerable (4.15.0-1010.11)
	disco	Not vulnerable (4.18.0-1005.7)
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.4.0-1086.94)
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1053.57)
	cosmic	Does not exist
	disco	Not vulnerable (5.0.0-1010.10)
	trusty	Does not exist
	upstream	Released (4.14~rc7)
	xenial	Released (4.4.0-1088.93)

Severity score breakdown

Parameter	Value
Base score	5.5
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

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