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authorEric Dumazet <edumazet@google.com>2012-12-20 20:00:27 +0400
committerDavid S. Miller <davem@davemloft.net>2012-12-22 01:14:01 +0400
commitf7e75ba1772bc712af0070655ffd8b09906993b5 (patch)
treeef32b318efe584f845f05eb7f65daca803abb6a1 /include
parent412ed94744d16806fbec3bd250fd94e71cde5a1f (diff)
downloadlinux-f7e75ba1772bc712af0070655ffd8b09906993b5.tar.xz
ip_gre: fix possible use after free
Once skb_realloc_headroom() is called, tiph might point to freed memory. Cache tiph->ttl value before the reallocation, to avoid unexpected behavior. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
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