CVE-2016-5728

Published: 27 June 2016

Race condition in the vop_ioctl function in drivers/misc/mic/vop/vop_vringh.c in the MIC VOP driver in the Linux kernel before 4.6.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (memory corruption and system crash) by changing a certain header, aka a "double fetch" vulnerability.

From the Ubuntu Security Team

Pengfei Wang discovered a race condition in the MIC VOP driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or obtain potentially sensitive information from kernel memory.

Notes

Author	Note
jdstrand	android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support

Author

Note

jdstrand

android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Priority

Cvss 3 Severity Score

6.3

Score breakdown

Status

Package	Release	Status
linux-aws Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	xenial	Not vulnerable (4.4.0-1001.10)
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-flo Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	wily	Not vulnerable
	xenial	Not vulnerable
	yakkety	Not vulnerable
	upstream	Released (4.7~rc1)
linux-gke Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.4.0-1003.3)
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-hwe Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-hwe-edge Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-linaro-omap Launchpad, Ubuntu, Debian	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
	precise	Ignored (end of life)
linux-linaro-shared Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-linaro-vexpress Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-lts-quantal Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
	wily	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	precise	Released (3.13.0-95.142~precise1)
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-lts-utopic Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-lts-vivid Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Released (3.19.0-68.76~14.04.1)
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-lts-wily Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-lts-xenial Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Released (4.4.0-36.55~14.04.1)
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-maguro Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-mako Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	wily	Not vulnerable
	xenial	Not vulnerable
	yakkety	Not vulnerable
	upstream	Released (4.7~rc1)
linux-manta Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	wily	Not vulnerable
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-qcm-msm Launchpad, Ubuntu, Debian	precise	Ignored (end of life)
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux-raspi2 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	wily	Ignored (end of life)
	xenial	Released (4.4.0-1021.27)
	yakkety	Not vulnerable (4.8.0-1012.14)
	upstream	Released (4.7~rc1)
linux-snapdragon Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	wily	Does not exist
	xenial	Released (4.4.0-1024.27)
	yakkety	Not vulnerable (4.4.0-1029.32)
	upstream	Released (4.7~rc1)
linux-ti-omap4 Launchpad, Ubuntu, Debian	precise	Not vulnerable
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	upstream	Released (4.7~rc1)
linux Launchpad, Ubuntu, Debian	upstream	Released (4.7~rc1)
	precise	Not vulnerable
	trusty	Released (3.13.0-95.142)
	wily	Ignored (end of life)
	xenial	Released (4.4.0-36.55)
	yakkety	Not vulnerable (4.8.0-11.12)
	Patches: Introduced by f69bcbf3b4c4b333dcd7a48eaf868bf0c88edab5 Fixed by 9bf292bfca94694a721449e3fd752493856710f6
linux-armadaxp Launchpad, Ubuntu, Debian	upstream	Released (4.7~rc1)
	precise	Not vulnerable
	trusty	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-goldfish Launchpad, Ubuntu, Debian	upstream	Released (4.7~rc1)
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	wily	Not vulnerable
	xenial	Not vulnerable
	yakkety	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	upstream	Released (4.7~rc1)
	precise	Does not exist
	trusty	Does not exist (trusty was ignored)
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist

Severity score breakdown

Parameter	Value
Base score	6.3
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

References

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