Use-after-free vulnerability in the nfqnl_zcopy function in net/netfilter/nfnetlink_queue_core.c in the Linux kernel through 3.13.6 allows attackers to obtain sensitive information from kernel memory by leveraging the absence of a certain orphaning operation. NOTE: the affected code was moved to the skb_zerocopy function in net/core/skbuff.c before the vulnerability was announced.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-2568
• https://bugzilla.redhat.com/show_bug.cgi?id=1079012
• https://exchange.xforce.ibmcloud.com/vulnerabilities/91922
• https://lkml.org/lkml/2014/3/20/421
• http://seclists.org/oss-sec/2014/q1/627
• http://secunia.com/advisories/59599
• http://www.openwall.com/lists/oss-security/2014/03/20/16
• http://www.securityfocus.com/bid/66348
• http://www.ubuntu.com/usn/USN-2240-1