Race condition in the ath_tx_aggr_sleep function in drivers/net/wireless/ath/ath9k/xmit.c in the Linux kernel before 3.13.7 allows remote attackers to cause a denial of service (system crash) via a large amount of network traffic that triggers certain list deletions.
https://github.com/torvalds/linux/commit/21f8aaee0c62708654988ce092838aa7df4d25d8
http://www.securityfocus.com/bid/66492