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CVE-2019-19079

Published: 18 November 2019

A memory leak in the qrtr_tun_write_iter() function in net/qrtr/tun.c in the Linux kernel before 5.3 allows attackers to cause a denial of service (memory consumption), aka CID-a21b7f0cff19.

From the Ubuntu Security Team

It was discovered that the Qualcomm IPC Router TUN device driver in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion).

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
disco Ignored
(end of life, was pending)
eoan Not vulnerable
(5.3.0-12.13)
focal Not vulnerable
(5.4.0-9.12)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3)
xenial Not vulnerable
(4.2.0-16.19)
Patches:
Introduced by

28fb4e59a47d7f1f0c7a26d2ed3a671c26158536

Fixed by a21b7f0cff1906a93a0130b74713b15a0b36481d
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
disco Ignored
(end of life, was pending)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1005.5)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.3)
xenial Not vulnerable
(4.4.0-1001.10)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1024.27~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3)
xenial Does not exist

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)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1029.31~18.04.1)
disco Ignored
(end of life, was pending)
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)
xenial Not vulnerable
(4.11.0-1009.9)
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)
xenial Does not exist

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 (5.3)
xenial Ignored
(end of standard support, was needs-triage)
linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1029.30~18.04.1)
disco Ignored
(end of life, was pending)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.3)
xenial Not vulnerable
(4.10.0-1004.4)
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)
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 (5.3)
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 (5.3)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1029.30~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.3)
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)
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 (5.3)
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 (5.3)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
disco Ignored
(end of life, was pending)
eoan Not vulnerable
(5.3.0-1003.3)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

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

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1037.42)
disco Ignored
(end of life)
eoan
Released (5.0.0-1037.42)
focal Does not exist

trusty Does not exist

upstream
Released (5.3)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
disco Ignored
(end of life, was pending)
eoan Not vulnerable
(4.15.0-1011.13)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.3)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1010.15~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

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

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-1005.5)
disco Ignored
(end of life, was pending)
eoan Not vulnerable
(5.3.0-1005.6)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.3)
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 (5.3)
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 (5.3)
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