CVE-2017-0794

Published: 8 September 2017

A elevation of privilege vulnerability in the Upstream kernel scsi driver. Product: Android. Versions: Android kernel. Android ID: A-35644812.

From the Ubuntu Security Team

Pengfei Ding (丁鹏飞), Chenfu Bao (包沉浮), and Lenx Wei (韦韬) discovered a race condition in the generic SCSI driver (sg) of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

Author	Note
sbeattie	may be partially addressed by 1bc0eb0446158cc76562176b80623aa119afee5b
tyhicks	The Android test case for this issue, linked to in the References section, confirms that 1bc0eb0446158cc76562176b80623aa119afee5b is the fix for this issue Followup commits 8d26f491116f and e791ce27c3f6 added after testing commit 1bc0eb044615 exposed SG_SET_RESERVED_SIZE ioctl regressions

Author

Note

sbeattie

may be partially addressed by 1bc0eb0446158cc76562176b80623aa119afee5b

tyhicks

The Android test case for this issue, linked to in the References
section, confirms that 1bc0eb0446158cc76562176b80623aa119afee5b is the fix
for this issue
Followup commits 8d26f491116f and e791ce27c3f6 added after
testing commit 1bc0eb044615 exposed SG_SET_RESERVED_SIZE ioctl
regressions

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	cosmic	Not vulnerable (4.15.0-20.21)
	trusty	Released (3.13.0-161.211)
	xenial	Released (4.4.0-98.121)
	zesty	Ignored (end of life)
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.13.0-16.19)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 1bc0eb0446158cc76562176b80623aa119afee5b Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by e791ce27c3f6a1d3c746fd6a8f8e36c9540ec6f9 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 8d26f491116feaa0b16de370b6a7ba40a40fa0b4
linux-armadaxp Launchpad, Ubuntu, Debian	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
	artful	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1007.7)
	trusty	Not vulnerable (4.4.0-1002.2)
	xenial	Released (4.4.0-1039.48)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.15.0-1001.1)
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1009.9)
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	xenial	Released (4.13.0-1005.7)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.15.0-1002.2)
linux-azure-edge Launchpad, Ubuntu, Debian	cosmic	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.15.0-1002.2)
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.18.0-1003.3~18.04.1)
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needs-triage ESM criteria)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1006.6)
	trusty	Does not exist
	xenial	Released (4.13.0-1002.5)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.15.0-1001.1)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Ignored (end of standard support, was needs-triage)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (end of life, was needs-triage)
	zesty	Ignored (end of life)
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-26.29~16.04.2)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Released (4.13.0-26.29~16.04.2)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.18.0-8.9~18.04.1)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1008.8)
	trusty	Does not exist
	xenial	Released (4.4.0-1009.14)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.15.0-1002.2)
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Ignored (end of life, was needs-triage)
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Released (4.4.0-98.121~14.04.1)
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Not vulnerable (4.15.0-1004.5)
	trusty	Does not exist
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.15.0-1002.3)
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	cosmic	Not vulnerable (4.15.0-1010.11)
	trusty	Does not exist
	xenial	Released (4.4.0-1076.84)
	zesty	Ignored (end of life)
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable (4.13.0-1005.5)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1078.83)
	zesty	Ignored (end of life)
	upstream	Released (4.14~rc1)
	bionic	Not vulnerable
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	zesty	Does not exist
	upstream	Released (4.14~rc1)
	bionic	Does not exist

Severity score breakdown

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

References

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