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CVE-2019-19048

Published: 18 November 2019

A memory leak in the crypto_reportstat() function in drivers/virt/vboxguest/vboxguest_utils.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering copy_form_user() failures, aka CID-e0b0cb938864.

From the Ubuntu Security Team

It was discovered that the VirtualBox guest driver implementation in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion).

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
disco
Released (5.0.0-1023.26)
eoan
Released (5.3.0-1008.9)
focal Not vulnerable
(5.4.0-1005.5)
xenial Not vulnerable
(4.4.0-1001.10)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.4~rc3)
linux-aws-5.0
Launchpad, Ubuntu, Debian
trusty Does not exist

upstream
Released (5.4~rc3)
bionic
Released (5.0.0-1023.26~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1008.9~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
xenial Does not exist

linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
disco
Released (5.0.0-38.41)
eoan
Released (5.3.0-24.26)
focal Not vulnerable
(5.4.0-9.12)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.2.0-16.19)
Patches:
Introduced by

579db9d45cb4e8e7cedff9e6079331a1e2ea9f5d

Fixed by e0b0cb9388642c104838fac100a4af32745621e2
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 (5.4~rc3)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1028.30~18.04.1)
disco
Released (5.0.0-1028.30)
eoan
Released (5.3.0-1008.9)
focal Not vulnerable
(5.4.0-1006.6)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.11.0-1009.9)
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 (5.4~rc3)
xenial Ignored
(end of standard support, was needs-triage)
linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1028.29~18.04.1)
disco
Released (5.0.0-1028.29)
eoan
Released (5.3.0-1009.10)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.10.0-1004.4)
linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1009.10~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
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 (5.4~rc3)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1030.32)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1027.28~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
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 (5.4~rc3)
xenial Does not exist

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

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was pending)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
disco
Released (5.0.0-1024.26)
eoan
Released (5.3.0-1008.9)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.4.0-1004.9)
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 (5.4~rc3)
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 Ignored
(was needs-triage ESM criteria)
upstream
Released (5.4~rc3)
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)
eoan Not vulnerable
(4.15.0-1035.40)
focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
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
(5.4.0-1002.4)
trusty Does not exist

upstream
Released (5.4~rc3)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1033.38)
disco Ignored
(end of life)
eoan
Released (5.0.0-1033.38)
focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
disco
Released (5.0.0-1009.14)
eoan
Released (5.3.0-1007.8)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1009.14~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
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 (5.4~rc3)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-1005.5)
disco
Released (5.0.0-1024.25)
eoan
Released (5.3.0-1014.16)
focal Ignored
(end of life, was needed)
trusty Does not exist

upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.2.0-1013.19)
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 (5.4~rc3)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.4.0-1077.82)
disco Ignored
(end of life, was pending)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.4~rc3)
xenial Not vulnerable
(4.4.0-1012.12)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H