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authorDaniel Borkmann <dborkman@redhat.com>2014-01-06 00:57:54 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-04-03 12:02:38 -0700
commit0249715db671fa91b820595049df2e1a94b707bb (patch)
tree75aa4d2fd910c2f63b952be438597a3a1dce8064 /Documentation/sound/alsa
parent5636796e985b1278d778b18ff1e7176be0ed312d (diff)
netfilter: nf_conntrack_dccp: fix skb_header_pointer API usages
commit b22f5126a24b3b2f15448c3f2a254fc10cbc2b92 upstream. Some occurences in the netfilter tree use skb_header_pointer() in the following way ... struct dccp_hdr _dh, *dh; ... skb_header_pointer(skb, dataoff, sizeof(_dh), &dh); ... where dh itself is a pointer that is being passed as the copy buffer. Instead, we need to use &_dh as the forth argument so that we're copying the data into an actual buffer that sits on the stack. Currently, we probably could overwrite memory on the stack (e.g. with a possibly mal-formed DCCP packet), but unintentionally, as we only want the buffer to be placed into _dh variable. Fixes: 2bc780499aa3 ("[NETFILTER]: nf_conntrack: add DCCP protocol support") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/sound/alsa')
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