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CVE-2018-20855

Published: 26 July 2019

An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.

Priority

Low

Cvss 3 Severity Score

3.3

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
disco Not vulnerable
(4.18.0-1002.3)
trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.4.0-1001.10)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(abandoned)
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
disco Not vulnerable
(4.18.0-1003.3)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.11.0-1009.9)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.11.0-1009.9)
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
disco Not vulnerable
(4.18.0-10.11)
trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.2.0-16.19)
Patches:
Introduced by

41d902cb7c326d711674977763c4b30df87611bc

Fixed by 0625b4ba1a5d4703c7fb01c497bd6c156908af00
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(end of life, was needs-triage)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
disco Not vulnerable
(4.18.0-1002.3)
trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.10.0-1004.4)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1004.5~18.04.1)
disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(end of standard support)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1030.32)
disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-13.14~18.04.1)
disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-15.16~18.04.1)
disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
disco Not vulnerable
(4.18.0-1003.3)
trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.4.0-1004.9)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

disco Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
disco Not vulnerable
(4.15.0-1021.24)
trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(end of standard support, was needs-triage)
linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
disco Not vulnerable
(4.15.0-1007.9)
trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-1005.5)
disco Not vulnerable
(4.18.0-1005.7)
trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.2.0-1013.19)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.4.0-1077.82)
disco Not vulnerable
(5.0.0-1010.10)
trusty Does not exist

upstream
Released (4.19~rc1)
xenial Not vulnerable
(4.4.0-1012.12)

Severity score breakdown

Parameter Value
Base score 3.3
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N