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authorJesper Juhl <jj@chaosbits.net>2011-01-13 21:53:38 +0100
committerSven Eckelmann <sven@narfation.org>2011-01-13 22:11:12 +0100
commited7809d9c41b514115ddffaa860694393c2016b3 (patch)
treeef0e14d7477b2363f787ace24b683a439ea103f2 /net/ieee802154
parent53320fe3bb1b1eef1aaff8dd47aae530ebeeb1e5 (diff)
batman-adv: Even Batman should not dereference NULL pointers
There's a problem in net/batman-adv/unicast.c::frag_send_skb(). dev_alloc_skb() allocates memory and may fail, thus returning NULL. If this happens we'll pass a NULL pointer on to skb_split() which in turn hands it to skb_split_inside_header() from where it gets passed to skb_put() that lets skb_tail_pointer() play with it and that function dereferences it. And thus the bat dies. While I was at it I also moved the call to dev_alloc_skb() above the assignment to 'unicast_packet' since there's no reason to do that assignment if the memory allocation fails. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Sven Eckelmann <sven@narfation.org>
Diffstat (limited to 'net/ieee802154')
0 files changed, 0 insertions, 0 deletions