Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2020-0067

Published: 17 April 2020

In f2fs_xattr_generic_list of xattr.c, 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 required for exploitation.Product: Android. Versions: Android kernel. Android ID: A-120551147.

From the Ubuntu Security Team

It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory).

Priority

Medium

Cvss 3 Severity Score

4.4

Score breakdown

Status

Package Release Status
linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-37.41~18.04.1)
upstream
Released (5.5~rc1)
focal Does not exist

trusty Does not exist

xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1013.13~18.04.1)
upstream
Released (5.5~rc1)
focal Does not exist

trusty Does not exist

xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1018.18~18.04.1)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

focal 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 (5.5~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 (5.5~rc1)
xenial Does not exist

linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-106.107)
eoan
Released (5.3.0-59.53)
focal
Released (5.4.0-37.41)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.5~rc1)
xenial
Released (4.4.0-190.220)
Patches:
Introduced by

af48b85b8cd3fbb12c9b6759c16db6d69c0b03da

Fixed by 688078e7f36c293dae25b338ddc9e0a2790f6e06
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (5.5~rc1)
bionic
Released (4.15.0-1073.77)
eoan
Released (5.3.0-1023.25)
focal
Released (5.4.0-1015.15)
trusty
Released (4.4.0-1078.82)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (4.4.0-1114.127)
linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-59.53~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-106.107~16.04.1)
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 (5.5~rc1)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1067.68)
eoan
Released (5.3.0-1023.25)
focal
Released (5.4.0-1015.15)
trusty Does not exist

upstream
Released (5.5~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 (5.5~rc1)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1023.25~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
xenial
Released (4.4.0-1143.152)
bionic
Released (4.15.0-1080.87)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~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 (5.5~rc1)
xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1073.77~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan
Released (5.3.0-1028.29)
focal
Released (5.4.0-1016.16)
trusty
Released (4.15.0-1089.99~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1089.99~16.04.1)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1089.99)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1028.29~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~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 (5.5~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 (5.5~rc1)
xenial Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan
Released (5.3.0-1026.28)
focal
Released (5.4.0-1015.15)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1077.87~16.04.1)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1077.87)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1026.28~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~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 (5.5~rc1)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1063.66)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1042.43)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1026.28~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~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 (5.5~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1087.97)
eoan Ignored
(end of life)
focal Does not exist

trusty Does not exist

upstream
Released (5.5~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 (5.5~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1059.64)
eoan Ignored
(end of life)
focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1045.49)
eoan
Released (5.3.0-1024.26)
focal
Released (5.4.0-1015.15)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1045.49~16.04.1)
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 (5.5~rc1)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1024.26~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal
Released (5.4.0-1012.12)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1063.67)
eoan
Released (5.3.0-1027.29)
focal Ignored
(end of life, was needs-triage)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1139.148)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1027.29~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal
Released (5.4.0-27.31)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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