CVE-2010-4073

Published: 29 November 2010

The ipc subsystem in the Linux kernel before 2.6.37-rc1 does not initialize certain structures, which allows local users to obtain potentially sensitive information from kernel stack memory via vectors related to the (1) compat_sys_semctl, (2) compat_sys_msgctl, and (3) compat_sys_shmctl functions in ipc/compat.c; and the (4) compat_sys_mq_open and (5) compat_sys_mq_getsetattr functions in ipc/compat_mq.c.

From the Ubuntu security team

Dan Rosenberg discovered that IPC structures were not correctly initialized on 64bit systems. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
Patches:
Upstream: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=03145beb455cf5c20a761e8451e30b8a74ba58d9
Hardy: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-4073/patches/hardy/linux/0001-ipc-initialize-structure-memory-to-zero-for-compat-fun.txt
Karmic: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-4073/patches/karmic/linux/0001-ipc-initialize-structure-memory-to-zero-for-compat-fun.txt
Lucid: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-4073/patches/lucid/linux/0001-ipc-initialize-structure-memory-to-zero-for-compat-fun.txt
Maverick: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-4073/patches/maverick/linux/0001-ipc-initialize-structure-memory-to-zero-for-compat-fun.txt
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
linux-source-2.6.15
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)
Patches:
Dapper: http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-4073/patches/dapper/linux/0001-ipc-initialize-structure-memory-to-zero-for-compat-fun.txt
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.37~rc1)