CVE-2018-13053

Published: 2 July 2018

The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an integer overflow via a large relative timeout because ktime_add_safe is not used.

From the Ubuntu Security Team

It was discovered that the alarmtimer implementation in the Linux kernel contained an integer overflow vulnerability. A local attacker could use this to cause a denial of service.

Priority

Cvss 3 Severity Score

3.3

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	upstream	Released (4.19~rc1)
	trusty	Ignored (was needed ESM criteria)
	xenial	Released (4.4.0-139.165)
	artful	Ignored (end of life)
	bionic	Released (4.15.0-58.64)
	cosmic	Not vulnerable (4.18.0-9.10)
	disco	Not vulnerable (4.18.0-10.11)
	Patches: Introduced by 9a7adcf5c6dea63d2e47e6f6d2f7a6c9f48b9337 Fixed by 5f936e19cc0ef97dbe3a56e9498922ad5ba1edef
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.19~rc1)
	xenial	Ignored (abandoned)
linux-aws Launchpad, Ubuntu, Debian	upstream	Released (4.19~rc1)
	trusty	Released (4.4.0-1034.37)
	xenial	Released (4.4.0-1072.82)
	artful	Does not exist
	bionic	Released (4.15.0-1047.49)
	cosmic	Not vulnerable (4.18.0-1002.3)
	disco	Not vulnerable (4.18.0-1002.3)
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.18.0-1011.11~18.04.1)
	cosmic	Not vulnerable (4.18.0-1003.3)
	disco	Not vulnerable (4.18.0-1003.3)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (4.19~rc1)
	xenial	Released (4.15.0-1055.60)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Ignored (end of standard support)
linux-azure-edge Launchpad, Ubuntu, Debian	cosmic	Does not exist
	disco	Does not exist
	artful	Does not exist
	bionic	Released (4.18.0-1011.11~18.04.1)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Released (4.15.0-1055.60)
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Ignored (was needed ESM criteria)
linux-aws-hwe Launchpad, Ubuntu, Debian	upstream	Released (4.19~rc1)
	trusty	Does not exist
	xenial	Released (4.15.0-1047.49~16.04.1)
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.15.0-1040.42)
	cosmic	Not vulnerable (4.18.0-1002.3)
	disco	Not vulnerable (4.18.0-1002.3)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	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
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1040.42)
	disco	Does not exist
	upstream	Released (4.19~rc1)
	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
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.19~rc1)
	xenial	Ignored (end of life)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	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 (4.19~rc1)
	xenial	Released (4.15.0-58.64~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	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 (4.19~rc1)
	xenial	Released (4.15.0-58.64~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.15.0-1042.42)
	cosmic	Not vulnerable (4.18.0-1003.3)
	disco	Not vulnerable (4.18.0-1003.3)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Released (4.4.0-1037.43)
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Ignored (end of life, was ignored)
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Ignored (end of life, was ignored)
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Ignored (end of life, was ignored)
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Released (4.4.0-139.165~14.04.1)
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.19~rc1)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.19~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Released (4.15.0-1050.57)
	cosmic	Ignored (end of life)
	disco	Released (4.15.0-1050.57)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Ignored (end of standard support, was needed)
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1021.23)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1004.8)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Released (4.15.0-1021.23~16.04.1)
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Released (4.15.0-1043.46)
	cosmic	Not vulnerable (4.18.0-1005.7)
	disco	Not vulnerable (4.18.0-1005.7)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Released (4.4.0-1100.108)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Released (4.15.0-1060.66)
	cosmic	Does not exist
	disco	Not vulnerable (5.0.0-1010.10)
	trusty	Does not exist
	upstream	Released (4.19~rc1)
	xenial	Released (4.4.0-1104.109)

Severity score breakdown

Parameter	Value
Base score	3.3
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

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