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98503
2014 Oct 15
6
[PATCH] virtio_net: fix use after free
commit 0b725a2ca61bedc33a2a63d0451d528b268cf975
net: Remove ndo_xmit_flush netdev operation, use signalling instead.
added code that looks at skb->xmit_more after the skb has
been put in TX VQ. Since some paths process the ring and free the skb
immediately, this can cause use after free.
Fix by storing xmit_more in a local variable.
Cc: David S. Miller <davem at davemloft.net>