CVE-2009-1338 Information

Description

The kill_something_info function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signals directed to PID -1 which allows local users to bypass the intended namespace isolation and send arbitrary signals to all processes in all namespaces via a kill command.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d25141a818383b3c3b09f065698c544a7a0ec6e7 http://lkml.org/lkml/2008/7/23/148 http://secunia.com/advisories/34981 http://secunia.com/advisories/35120 http://secunia.com/advisories/35121 http://secunia.com/advisories/35343 http://secunia.com/advisories/35656 http://wiki.rpath.com/Advisories:rPSA-2009-0084 http://www.debian.org/security/2009/dsa-1787 http://www.debian.org/security/2009/dsa-1800 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28 http://www.openwall.com/lists/oss-security/2009/04/16/2 http://www.openwall.com/lists/oss-security/2009/04/17/4 http://www.openwall.com/lists/oss-security/2009/04/21/1 http://www.redhat.com/support/errata/RHSA-2009-1081.html http://www.securityfocus.com/archive/1/503610/100/0/threaded http://www.ubuntu.com/usn/usn-793-1 https://bugzilla.redhat.com/show_bug.cgi?id=496031 https://exchange.xforce.ibmcloud.com/vulnerabilities/50386