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CVE-2011-1093

Published: 18 July 2011

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

From the Ubuntu security team

Johan Hovold discovered that the DCCP network stack did not correctly handle certain packet combinations. A remote attacker could send specially crafted network traffic that would crash the system, leading to a denial of service.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
hardy
Released (2.6.24-29.93)
lucid
Released (2.6.32-31.60)
maverick
Released (2.6.35-29.51)
natty
Released (2.6.38-6.33)
oneiric Not vulnerable
(2.6.39-0.0)
upstream
Released (2.6.38~rc8)
linux-ec2
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.32-315.28)
maverick Ignored
(binary supplied by "linux" now)
natty Does not exist

oneiric Does not exist

upstream
Released (2.6.38~rc8)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.31-610.27)
maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.38~rc8)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.35-30.54~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.38~rc8)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.38-7.35~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.38~rc8)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.38~rc8)
linux-mvl-dove
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.32-216.33)
maverick
Released (2.6.32-416.33)
natty Does not exist

oneiric Does not exist

upstream
Released (2.6.38~rc8)
linux-ti-omap4
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

maverick
Released (2.6.35-903.23)
natty
Released (2.6.38-1205.6)
oneiric Not vulnerable
(2.6.38-1309.13)
upstream
Released (2.6.38~rc8)