The sk_run_filter function in net/core/filter.c in the Linux kernel before...

Vulnerability 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.

References

• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
• http://secunia.com/advisories/42778
• http://secunia.com/advisories/42801
• http://www.securityfocus.com/archive/1/520102/100/0/threaded
• http://www.redhat.com/support/errata/RHSA-2011-0017.html
• http://secunia.com/advisories/46397
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html
• http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
• http://secunia.com/advisories/42932
• http://www.redhat.com/support/errata/RHSA-2011-0007.html
• http://www.vupen.com/english/advisories/2011/0124
• http://www.spinics.net/lists/netdev/msg146361.html
• http://www.securityfocus.com/archive/1/514845
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html
• http://www.vupen.com/english/advisories/2010/3321
• http://www.vupen.com/english/advisories/2011/0298
• http://www.redhat.com/support/errata/RHSA-2010-0958.html
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
• http://secunia.com/advisories/42963
• http://www.securityfocus.com/bid/44758
• http://www.vmware.com/security/advisories/VMSA-2011-0012.html
• http://secunia.com/advisories/42884
• http://www.vupen.com/english/advisories/2011/0375
• http://secunia.com/advisories/42890
• https://bugzilla.redhat.com/show_bug.cgi?id=651698
• http://www.redhat.com/support/errata/RHSA-2011-0162.html
• http://www.vupen.com/english/advisories/2011/0012
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
• http://www.vupen.com/english/advisories/2011/0168
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
• http://secunia.com/advisories/42745
• http://secunia.com/advisories/43291
• http://www.securityfocus.com/archive/1/514705
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=57fe93b374a6b8711995c2d466c502af9f3a08bb
• http://lists.grok.org.uk/pipermail/full-disclosure/2010-November/077321.html