CVE-2013-1828 Information

Description

The sctp_getsockopt_assoc_stats function in net/sctp/socket.c in the Linux kernel before 3.8.4 does not validate a size value before proceeding to a copy_from_user operation which allows local users to gain privileges via a crafted application that contains an SCTP_GET_ASSOC_STATS getsockopt system call.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=726bc6b092da4c093eb74d13c07184b18c1af0f1 http://grsecurity.net/~spender/sctp.c http://twitter.com/grsecurity/statuses/309805924749541376 http://www.exploit-db.com/exploits/24747 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4 http://www.openwall.com/lists/oss-security/2013/03/08/2 https://bugzilla.redhat.com/show_bug.cgi?id=919315 https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1