The dma_rx function in drivers/net/wireless/b43/dma.c in the Linux kernel before 2.6.39 does not properly allocate receive buffers, which allows remote attackers to cause a denial of service (system crash) via a crafted frame.
https://bugzilla.redhat.com/show_bug.cgi?id=738202
https://github.com/torvalds/linux/commit/c85ce65ecac078ab1a1835c87c4a6319cf74660a