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authorEvgeniy Polyakov <johnpol@2ka.mipt.ru>2008-04-27 18:27:30 -0400
committerDavid S. Miller <davem@davemloft.net>2008-04-27 18:27:30 -0400
commit9ae27e0adbf471c7a6b80102e38e1d5a346b3b38 (patch)
tree54ef2bb504625e003a35dae8ebbeb4b755f52419 /net/mac80211/Kconfig
parentdae50295488f35d2d617b08a5fae43154c947eec (diff)
tcp: Fix slab corruption with ipv6 and tcp6fuzz
From: Evgeniy Polyakov <johnpol@2ka.mipt.ru> This fixes a regression added by ec3c0982a2dd1e671bad8e9d26c28dcba0039d87 ("[TCP]: TCP_DEFER_ACCEPT updates - process as established") tcp_v6_do_rcv()->tcp_rcv_established(), the latter goes to step5, where eventually skb can be freed via tcp_data_queue() (drop: label), then if check for tcp_defer_accept_check() returns true and thus tcp_rcv_established() returns -1, which forces tcp_v6_do_rcv() to jump to reset: label, which in turn will pass through discard: label and free the same skb again. Tested by Eric Sesterhenn. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-By: Patrick McManus <mcmanus@ducksong.com>
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