CVE-2017-13686

Published: 24 August 2017

net/ipv4/route.c in the Linux kernel 4.13-rc1 through 4.13-rc6 is too late to check for a NULL fi field when RTM_F_FIB_MATCH is set, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via crafted system calls. NOTE: this does not affect any stable release.

Notes

Author	Note
tyhicks	The flaw only existed in -rc releases of the kernel

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	trusty	Not vulnerable
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Not vulnerable
	Patches: Introduced by b61798130f1be5bff08712308126c2d7ebe390ef Fixed by bc3aae2bbac46dd894c89db5d5e98f7f0ef9e205
linux-armadaxp Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-aws Launchpad, Ubuntu, Debian	trusty	Not vulnerable
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Does not exist
linux-azure Launchpad, Ubuntu, Debian	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable (4.13.0-1005.7)
	zesty	Does not exist
linux-euclid Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc7)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable (4.13.0-1002.5)
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable (4.13.0-26.29~16.04.2)
	zesty	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable (4.13.0-26.29~16.04.2)
	zesty	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	trusty	Ignored (end of life, was needs-triage)
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	trusty	Not vulnerable
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-mako Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc7)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Not vulnerable
linux-snapdragon Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Not vulnerable
	zesty	Not vulnerable
linux-ti-omap4 Launchpad, Ubuntu, Debian	trusty	Does not exist
	upstream	Released (4.13~rc7)
	xenial	Does not exist
	zesty	Does not exist

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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