CVE-2009-2847 Information

Description

The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5 when running on 64-bit systems does not clear certain padding bytes from a structure which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=0083fc2c50e6c5127c2802ad323adf8143ab7856 http://rhn.redhat.com/errata/RHSA-2009-1243.html http://secunia.com/advisories/36136 http://secunia.com/advisories/36501 http://secunia.com/advisories/36562 http://secunia.com/advisories/36759 http://secunia.com/advisories/37105 http://secunia.com/advisories/37471 http://www.exploit-db.com/exploits/9352 http://www.openwall.com/lists/oss-security/2009/08/04/1 http://www.openwall.com/lists/oss-security/2009/08/05/1 http://www.openwall.com/lists/oss-security/2009/08/26/2 http://www.redhat.com/support/errata/RHSA-2009-1438.html http://www.securityfocus.com/archive/1/507985/100/0/threaded http://www.ubuntu.com/usn/USN-852-1 http://www.vmware.com/security/advisories/VMSA-2009-0016.html http://www.vupen.com/english/advisories/2009/3316 https://bugzilla.redhat.com/show_bug.cgi?id=515392 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A10637 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A8405 https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html