CVE-2019-14615

Published: 14 January 2020

Insufficient control flow in certain data structures for some Intel(R) Processors with Intel(R) Processor Graphics may allow an unauthenticated user to potentially enable information disclosure via local access.

From the Ubuntu Security Team

It was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information.

Notes

Author	Note
tyhicks	This issue only affects systems with Intel Graphics Processing Units (GPUs) Gen8 Intel GPUs were previously fixed by commit 0160f055393f ("drm/i915/gen8: Add WaClearSlmSpaceAtContextSwitch workaround") Fixes are only available for Gen8 and Gen9 GPUs at this time Fixes for Gen6 and Gen7 may be available in the future

Author

Note

tyhicks

This issue only affects systems with Intel Graphics Processing Units
(GPUs)
Gen8 Intel GPUs were previously fixed by commit 0160f055393f
("drm/i915/gen8: Add WaClearSlmSpaceAtContextSwitch workaround")
Fixes are only available for Gen8 and Gen9 GPUs at this time
Fixes for Gen6 and Gen7 may be available in the future

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-76.86)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.3.0-29.31)
	focal	Not vulnerable (5.4.0-18.22)
	trusty	Ignored (was needed ESM criteria)
	xenial	Released (4.4.0-173.203)
	upstream	Released (5.5~rc7)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 0160f055393f457f8f218377bc088207eb502c38 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by bc8a76a152c5f9ef3b48104154a65a68a8b76946
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1058.60)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1010.11)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Released (4.4.0-1062.66) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.5~rc7)
	xenial	Released (4.4.0-1102.113)
linux-azure Launchpad, Ubuntu, Debian	disco	Ignored (end of life)
	eoan	Released (5.3.0-1010.11)
	focal	Not vulnerable (5.4.0-1006.6)
	bionic	Released (5.0.0-1032.34)
	trusty	Released (4.15.0-1067.72~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.5~rc7)
	xenial	Released (4.15.0-1067.72)
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1010.11~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
linux-azure-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1025.28)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Released (4.15.0-1058.60~16.04.1)
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1031.32)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1012.13)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Released (4.15.0-1055.59)
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1012.13~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1052.55)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1030.31)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1012.13~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-28.30~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Released (4.15.0-76.86~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1053.53)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1010.11)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Released (4.4.0-1066.73)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Released (4.4.0-173.203~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1067.77)
	disco	Ignored (end of life)
	eoan	Released (4.15.0-1067.77)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.6.0-1007.7)
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1037.42)
	disco	Ignored (end of life)
	eoan	Released (5.0.0-1037.42)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1033.36)
	disco	Ignored (end of life)
	eoan	Released (5.3.0-1009.10)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Released (4.15.0-1033.36~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1011.16)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.4.0-1007.7)
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (intel graphics only)
	disco	Not vulnerable (intel graphics only)
	eoan	Not vulnerable (intel graphics only)
	focal	Not vulnerable (intel graphics only)
	trusty	Does not exist
	upstream	Not vulnerable (intel graphics only)
	xenial	Not vulnerable (intel graphics only)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1017.19~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.4.0-24.28)
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1071.78)
	disco	Ignored (end of life)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.5~rc7)
	xenial	Released (4.4.0-1133.141)

Severity score breakdown

Parameter	Value
Base score	5.5
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

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