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-2019-18680

Published: 4 November 2019

An issue was discovered in the Linux kernel 4.4.x before 4.4.195. There is a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c that will cause denial of service, aka CID-91573ae4aed0.

Notes

AuthorNote
PHLin 
this patch was targeted for 4.4 only, from the author's comment:
Upstream does not use tc->t_sock in the second loop after below two patches.
afb4164d91c7 ("RDS: TCP: Refactor connection destruction to handle multiple paths") and
2d746c93b6e5 ("rds: tcp: remove redundant function rds_tcp_conn_paths_destroy()")

Priority

Medium

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 Not vulnerable
(4.18.0-10.11)
eoan Not vulnerable
(5.0.0-13.14)
trusty Ignored
(was needs-triage ESM criteria)
upstream Not vulnerable
(debian: Vulnerable code not present)
xenial
Released (4.4.0-168.197)
Patches:
Introduced by

local-2019-18680-break

Fixed by local-2019-18680-fix
linux-aws
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(4.15.0-1001.1)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (2.6.12~rc2)
xenial
Released (4.4.0-1098.109)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

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

disco Does not exist

eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
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)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (2.6.12~rc2)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Ignored
(end of standard support, was needs-triage)
linux-gcp
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(4.15.0-1001.1)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Does not exist

upstream
Released (2.6.12~rc2)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
disco Does not exist

eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

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

eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian 		bionic Ignored
(end of life, was needs-triage)
disco Does not exist

eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(4.15.0-1002.2)
disco Not vulnerable
(4.18.0-1003.3)
eoan Not vulnerable
(5.0.0-1004.4)
trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial
Released (4.4.0-1062.69)
linux-lts-trusty
Launchpad, Ubuntu, Debian 		bionic Does not exist

disco Does not exist

eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

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

disco Does not exist

eoan Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (2.6.12~rc2)
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)
trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Ignored
(end of standard support, was needs-triage)
linux-oem-5.4
Launchpad, Ubuntu, Debian 		bionic Does not exist

eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(5.0.0-1010.11)
disco Not vulnerable
(5.0.0-1010.11)
eoan Not vulnerable
(5.0.0-1010.11)
trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(4.15.0-1007.9)
disco Not vulnerable
(4.15.0-1007.9)
eoan Not vulnerable
(4.15.0-1011.13)
trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
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

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(4.13.0-1005.5)
disco Not vulnerable
(4.18.0-1005.7)
eoan Not vulnerable
(5.0.0-1006.6)
trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial
Released (4.4.0-1125.134)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(5.3.0-1017.19~18.04.1)
eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(4.4.0-1077.82)
disco Not vulnerable
(5.0.0-1010.10)
eoan Does not exist

trusty Does not exist

upstream
Released (2.6.12~rc2)
xenial
Released (4.4.0-1129.137)

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

References

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›

Further reading