The sock_getsockopt function in net/core/sock.c in the Linux kernel before 2.6.28.6 does not initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel memory via an SO_BSDCOMPAT getsockopt request.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8618
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11653
https://exchange.xforce.ibmcloud.com/vulnerabilities/48847
https://bugzilla.redhat.com/show_bug.cgi?id=486305
http://www.vupen.com/english/advisories/2009/3316
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://www.ubuntu.com/usn/usn-751-1
http://www.securityfocus.com/bid/33846
http://www.securityfocus.com/archive/1/507985/100/0/threaded
http://www.redhat.com/support/errata/RHSA-2009-0360.html
http://www.redhat.com/support/errata/RHSA-2009-0326.html
http://www.openwall.com/lists/oss-security/2009/03/02/6
http://www.openwall.com/lists/oss-security/2009/02/24/1
http://www.mandriva.com/security/advisories?name=MDVSA-2009:071
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.6
http://www.debian.org/security/2009/dsa-1794
http://www.debian.org/security/2009/dsa-1787
http://www.debian.org/security/2009/dsa-1749
http://secunia.com/advisories/37471
http://secunia.com/advisories/35394
http://secunia.com/advisories/35390
http://secunia.com/advisories/35011
http://secunia.com/advisories/34981
http://secunia.com/advisories/34962
http://secunia.com/advisories/34786
http://secunia.com/advisories/34680
http://secunia.com/advisories/34502
http://secunia.com/advisories/34394
http://secunia.com/advisories/33758
http://rhn.redhat.com/errata/RHSA-2009-0459.html
http://patchwork.kernel.org/patch/6816/
http://openwall.com/lists/oss-security/2009/02/20/1
http://marc.info/?l=linux-kernel&m=123540732700371&w=2
http://lkml.org/lkml/2009/2/12/123
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00007.html