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CVE-2019-17351

Published: 8 October 2019

An issue was discovered in drivers/xen/balloon.c in the Linux kernel before 5.2.3, as used in Xen through 4.12.x, allowing guest OS users to cause a denial of service because of unrestricted resource consumption during the mapping of guest memory, aka CID-6ef36ab967c7.

From the Ubuntu Security Team

Julien Grall discovered that the Xen balloon memory driver in the Linux kernel did not properly restrict the amount of memory set aside for page mappings in some situations. An attacker could use this to cause a denial of service (kernel memory exhaustion).

Priority

Low

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1047.49)
disco
Released (5.0.0-1018.20)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1005.5)
trusty
Released (4.4.0-1062.66)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1102.113)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1021.24~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1007.8~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~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

xenial Does not exist

upstream
Released (5.3~rc1)
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-60.67)
disco
Released (5.0.0-31.33)
eoan Not vulnerable
(5.2.0-10.11)
focal Not vulnerable
(5.4.0-9.12)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3~rc1)
xenial
Released (4.4.0-174.204)
Patches:
Introduced by

1775826ceec51187aa868406585799b7e76ffa7d

Fixed by a1078e821b605813b63bf6bca414a85f804d5c66
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 (5.3~rc1)
xenial
Released (4.15.0-1047.49~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1022.23~18.04.1)
disco
Released (5.0.0-1022.23)
eoan Not vulnerable
(5.3.0-1002.2)
focal Not vulnerable
(5.4.0-1006.6)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1056.61)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1022.23~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1056.61)
linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1042.45)
disco
Released (5.0.0-1020.20)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1041.43)
linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(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 (5.3~rc1)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1042.45)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1041.43)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1020.20~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~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 (5.3~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-31.33~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-60.67~16.04.1)
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 (5.3~rc1)
xenial
Released (4.15.0-60.67~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1043.43)
disco
Released (5.0.0-1019.20)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1066.73)
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 (5.3~rc1)
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
Released (4.4.0-174.204~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.3~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1056.65)
disco
Released (4.15.0-1056.65)
eoan
Released (4.15.0-1059.68)
focal Does not exist

trusty Does not exist

upstream
Released (5.3~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
(5.4.0-1002.4)
trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1024.27)
disco Ignored
(end of life)
eoan
Released (5.0.0-1024.27)
focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1022.25)
disco
Released (5.0.0-1004.8)
eoan Not vulnerable
(5.3.0-1002.2)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.15.0-1022.25~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1007.12~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1044.47)
disco
Released (5.0.0-1019.19)
eoan Not vulnerable
(5.3.0-1005.6)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1129.138)
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 (5.3~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1062.69)
disco
Released (5.0.0-1023.24)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3~rc1)
xenial
Released (4.4.0-1133.141)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H