CVE-2010-4158 Information

Description

The sk_run_filter function in net/core/filter.c in the Linux kernel before 2.6.36.2 does not check whether a certain memory location has been initialized before executing a (1) BPF_S_LD_MEM or (2) BPF_S_LDX_MEM instruction which allows local users to obtain potentially sensitive information from kernel stack memory via a crafted socket filter.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=57fe93b374a6b8711995c2d466c502af9f3a08bb http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html http://lists.grok.org.uk/pipermail/full-disclosure/2010-November/077321.html http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html http://secunia.com/advisories/42745 http://secunia.com/advisories/42778 http://secunia.com/advisories/42801 http://secunia.com/advisories/42884 http://secunia.com/advisories/42890 http://secunia.com/advisories/42932 http://secunia.com/advisories/42963 http://secunia.com/advisories/43291 http://secunia.com/advisories/46397 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2 http://www.mandriva.com/security/advisories?name=MDVSA-2011:029 http://www.redhat.com/support/errata/RHSA-2010-0958.html http://www.redhat.com/support/errata/RHSA-2011-0007.html http://www.redhat.com/support/errata/RHSA-2011-0017.html http://www.redhat.com/support/errata/RHSA-2011-0162.html http://www.securityfocus.com/archive/1/514705 http://www.securityfocus.com/archive/1/514845 http://www.securityfocus.com/archive/1/520102/100/0/threaded http://www.securityfocus.com/bid/44758 http://www.spinics.net/lists/netdev/msg146361.html http://www.vmware.com/security/advisories/VMSA-2011-0012.html http://www.vupen.com/english/advisories/2010/3321 http://www.vupen.com/english/advisories/2011/0012 http://www.vupen.com/english/advisories/2011/0124 http://www.vupen.com/english/advisories/2011/0168 http://www.vupen.com/english/advisories/2011/0298 http://www.vupen.com/english/advisories/2011/0375 https://bugzilla.redhat.com/show_bug.cgi?id=651698