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CVE-2015-3636

Published: 2 May 2015

The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.

From the Ubuntu security team

Wen Xu discovered a use-after-free flaw in the Linux kernel's ipv4 ping support. A local user could exploit this flaw to cause a denial of service (system crash) or gain administrative privileges on the system.

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
Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
Patches:
Introduced by

c319b4d76b9e583a5d88d6bf190e079c4e43213d

Fixed by a134f083e79fb4c3d0a925691e732c56911b4326
linux-2.6
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-ec2
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc2)