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CVE-2019-9445

Published: 6 September 2019

In the Android kernel in F2FS driver there is a possible out of bounds read due to a missing bounds check. 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 perform bounds checking in some situations, leading to an out-of- bounds read. A local attacker could possibly use this to expose sensitive information (kernel memory).

Priority

Low

Cvss 3 Severity Score

4.4

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-118.119)
xenial
Released (4.4.0-190.220)
eoan Not vulnerable
(5.2.0-8.9)
focal Not vulnerable
(5.4.0-9.12)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.1~rc1)
Patches:
Introduced by

6b4ea0160ae236a6561defa28e19f973aedda9ff

Fixed by 720db068634c91553a8e1d9a0fcd8c7050e06d2b
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1083.87)
trusty
Released (4.4.0-1078.82)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (4.4.0-1114.127)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1005.5)
upstream
Released (5.1~rc1)
linux-aws-hwe
Launchpad, Ubuntu, Debian
xenial
Released (4.15.0-1083.87~16.04.1)
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~rc1)
linux-azure
Launchpad, Ubuntu, Debian
trusty
Released (4.15.0-1096.106~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (4.15.0-1096.106~16.04.1)
bionic Ignored
(end of life, was needs-triage)
eoan Not vulnerable
(5.3.0-1002.2)
focal Not vulnerable
(5.4.0-1006.6)
upstream
Released (5.1~rc1)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1096.106)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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)
trusty Does not exist

upstream
Released (5.1~rc1)
xenial
Released (4.15.0-1084.95~16.04.1)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1084.95)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1070.73)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1032.33)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-26.28~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~rc1)
xenial
Released (4.15.0-118.119~16.04.1)
linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-37.41~18.04.1)
focal Does not exist

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1075.76)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty
Released (4.4.0-190.220~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.1~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1097.107)
eoan Ignored
(end of life)
focal Does not exist

trusty Does not exist

upstream
Released (5.1~rc1)
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 (5.1~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1043.48)
eoan Ignored
(end of life, was pending)
focal Does not exist

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1054.58)
eoan Not vulnerable
(5.3.0-1002.2)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.1~rc1)
xenial
Released (4.15.0-1054.58~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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)
trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1071.75)
eoan Not vulnerable
(5.3.0-1005.6)
focal Ignored
(end of life, was needs-triage)
trusty Does not exist

upstream
Released (5.1~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

trusty Does not exist

upstream
Released (5.1~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)
trusty Does not exist

upstream
Released (5.1~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1087.95)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.1~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