CVE-2019-9453

Published: 6 September 2019

In the Android kernel in F2FS touch driver there is a possible out of bounds read due to improper input validation. This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation.

From the Ubuntu Security Team

It was discovered that the F2FS file system in the Linux kernel did not properly validate xattr meta data in some situations, leading to an out-of- bounds read. An attacker could use this to construct a malicious F2FS image that, when mounted, could expose sensitive information (kernel memory).

Priority

Cvss 3 Severity Score

4.4

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-60.67)
	eoan	Not vulnerable (5.2.0-8.9)
	focal	Not vulnerable (5.4.0-9.12)
	groovy	Not vulnerable (5.4.0-26.30)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.2~rc1)
	xenial	Released (4.4.0-190.220)
	Patches: Introduced by dd9cfe236f95bbda9ceb5a4ca419b9fb574c95f9 Fixed by 2777e654371dd4207a3a7f4fb5fa39550053a080
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1047.49)
	eoan	Not vulnerable (5.3.0-1003.3)
	focal	Not vulnerable (5.4.0-1005.5)
	groovy	Not vulnerable (5.4.0-1009.9)
	trusty	Released (4.4.0-1078.82) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.2~rc1)
	xenial	Released (4.4.0-1114.127)
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1016.17~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1018.18~18.04.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.15.0-1047.49~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Not vulnerable (5.3.0-1002.2)
	focal	Not vulnerable (5.4.0-1006.6)
	groovy	Not vulnerable (5.4.0-1010.10)
	trusty	Released (4.15.0-1059.64~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.2~rc1)
	xenial	Released (4.15.0-1056.61)
linux-azure-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1082.92)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1007.8~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1020.20~18.04.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-dell300x Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1005.8)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Not vulnerable (5.3.0-1003.3)
	focal	Not vulnerable (5.4.0-1005.5)
	groovy	Not vulnerable (5.4.0-1009.9)
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.15.0-1041.43)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1071.81)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1008.9~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1019.19~18.04.2)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1041.43)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1020.20~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gke-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1025.25~18.04.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gkeop Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.4.0-1008.9)
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-gkeop-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1001.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-31.33~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.15.0-60.67~16.04.1)
linux-hwe-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-37.41~18.04.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-hwe-5.8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.8.0-23.24~20.04.1)
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1043.43)
	eoan	Not vulnerable (5.3.0-1003.3)
	focal	Not vulnerable (5.4.0-1004.4)
	groovy	Not vulnerable (5.4.0-1009.9)
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.4.0-1080.87)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Released (4.4.0-190.220~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1056.65)
	eoan	Ignored (end of life, was pending)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.10 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.10.0-1008.9)
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.6.0-1007.7)
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1024.27)
	eoan	Released (5.0.0-1025.28)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1022.25)
	eoan	Not vulnerable (5.3.0-1002.2)
	focal	Not vulnerable (5.4.0-1005.5)
	groovy	Not vulnerable (5.4.0-1009.9)
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.15.0-1022.25~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	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
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1019.19~18.04.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	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)
	groovy	Not vulnerable (5.4.0-1008.8)
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1013.13~18.04.1)
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1044.47)
	eoan	Not vulnerable (5.3.0-1005.6)
	focal	Ignored (end of life, was needs-triage)
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.4.0-1139.148)
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
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	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)
	groovy	Not vulnerable (5.4.0-24.28)
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1062.69)
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc1)
	xenial	Released (4.4.0-1143.152)

Severity score breakdown

Parameter	Value
Base score	4.4
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

References

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