net/packet/af_packet.c in the Linux kernel before 2.6.37-rc2 does not properly initialize certain structure members, which allows local users to obtain potentially sensitive information from kernel stack memory by leveraging the CAP_NET_RAW capability to read copies of the applicable structures.

References

• https://nvd.nist.gov/vuln/detail/CVE-2010-3876
• https://bugzilla.redhat.com/show_bug.cgi?id=649715
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=67286640f638f5ad41a946b9a3dc75327950248f
• http://marc.info/?l=linux-netdev&m=128854507220908&w=2
• http://openwall.com/lists/oss-security/2010/11/02/10
• http://openwall.com/lists/oss-security/2010/11/02/12
• http://openwall.com/lists/oss-security/2010/11/02/7
• http://openwall.com/lists/oss-security/2010/11/02/9
• http://openwall.com/lists/oss-security/2010/11/04/5
• http://secunia.com/advisories/42789
• http://secunia.com/advisories/42890
• http://secunia.com/advisories/42963
• http://secunia.com/advisories/46397
• http://www.debian.org/security/2010/dsa-2126
• http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc2
• http://www.redhat.com/support/errata/RHSA-2010-0958.html
• http://www.redhat.com/support/errata/RHSA-2011-0004.html
• http://www.redhat.com/support/errata/RHSA-2011-0007.html
• http://www.redhat.com/support/errata/RHSA-2011-0162.html
• http://www.securityfocus.com/archive/1/520102/100/0/threaded
• http://www.securityfocus.com/bid/44630
• http://www.vmware.com/security/advisories/VMSA-2011-0012.html
• http://www.vupen.com/english/advisories/2011/0024
• http://www.vupen.com/english/advisories/2011/0168
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=67286640f638f5ad41a946b9a3dc75327950248f