CVE-2014-3144 Information

Description

The (1) BPF_S_ANC_NLATTR and (2) BPF_S_ANC_NLATTR_NEST extension implementations in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 do not check whether a certain length value is sufficiently large which allows local users to cause a denial of service (integer underflow and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr and __skb_get_nlattr_nest functions before the vulnerability was announced.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=05ab8f2647e4221cbdb3856dd7d32bd5407316b3 http://linux.oracle.com/errata/ELSA-2014-3052.html http://secunia.com/advisories/58990 http://secunia.com/advisories/59311 http://secunia.com/advisories/59597 http://secunia.com/advisories/60613 http://www.debian.org/security/2014/dsa-2949 http://www.openwall.com/lists/oss-security/2014/05/09/6 http://www.securityfocus.com/bid/67309 http://www.ubuntu.com/usn/USN-2251-1 http://www.ubuntu.com/usn/USN-2252-1 http://www.ubuntu.com/usn/USN-2259-1 http://www.ubuntu.com/usn/USN-2261-1 http://www.ubuntu.com/usn/USN-2262-1 http://www.ubuntu.com/usn/USN-2263-1 http://www.ubuntu.com/usn/USN-2264-1 https://github.com/torvalds/linux/commit/05ab8f2647e4221cbdb3856dd7d32bd5407316b3