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CVE-2015-7990

Published: 28 December 2015

Race condition in the rds_sendmsg function in net/rds/sendmsg.c in the Linux kernel before 4.3.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6937.

From the Ubuntu Security Team

Sasha Levin discovered that the Reliable Datagram Sockets (RDS) implementation in the Linux kernel had a race condition when checking whether a socket was bound or not. A local attacker could use this to cause a denial of service (system crash).

Notes

AuthorNote
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support
sbeattie
denial of service through kernel NPE

Priority

Low

Cvss 3 Severity Score

5.8

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
precise
Released (3.2.0-98.138)
trusty
Released (3.13.0-77.121)
upstream
Released (4.4~rc4)
vivid
Released (3.19.0-49.55)
wily
Released (4.2.0-27.32)
xenial Not vulnerable
(4.3.0-5.16)
yakkety Not vulnerable
(4.4.0-21.37)
Patches:
Introduced by

74e98eb085889b0d2d4908f59f6e00026063014f

Fixed by 8c7188b23474cca017b3ef354c4a58456f68303a
linux-armadaxp
Launchpad, Ubuntu, Debian
precise
Released (3.2.0-1661.85)
trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (4.4~rc4)
xenial Not vulnerable
(4.4.0-1001.10)
yakkety Does not exist

linux-ec2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-flo
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.4~rc4)
vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

linux-fsl-imx51
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-gke
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.4~rc4)
xenial Not vulnerable
(4.4.0-1003.3)
yakkety Does not exist

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

trusty Does not exist
(trusty was ignored)
vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

upstream
Released (4.4~rc4)
linux-grouper
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-hwe
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.4~rc4)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.4~rc4)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-linaro-shared
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-lts-quantal
Launchpad, Ubuntu, Debian
precise Ignored
(end of life, was needs-triage)
trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

upstream
Released (4.4~rc4)
linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Ignored
(end of life, was needs-triage)
trusty Does not exist

upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
precise
Released (3.13.0-77.121~precise1)
trusty Does not exist

upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

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

trusty
Released (3.16.0-60.80~14.04.1)
upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

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

trusty
Released (3.19.0-49.55~14.04.1)
upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

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

trusty
Released (4.2.0-27.32~14.04.1)
upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

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

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

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

trusty Does not exist
(trusty was ignored)
upstream
Released (4.4~rc4)
vivid Not vulnerable

wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

linux-manta
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
upstream
Released (4.4~rc4)
vivid Not vulnerable

wily Not vulnerable

xenial Does not exist

yakkety Does not exist

linux-mvl-dove
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.4~rc4)
vivid Does not exist

wily
Released (4.2.0-1022.29)
xenial Not vulnerable
(4.4.0-1003.4)
yakkety Not vulnerable
(4.4.0-1009.10)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.4~rc4)
wily Does not exist

xenial Not vulnerable
(4.4.0-1012.12)
yakkety Not vulnerable
(4.4.0-1012.12)
linux-ti-omap4
Launchpad, Ubuntu, Debian
precise
Released (3.2.0-1476.99)
trusty Does not exist

upstream
Released (4.4~rc4)
vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

Severity score breakdown

Parameter Value
Base score 5.8
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H