From: Felix Fietkau nbd@nbd.name
commit fec3ebb5ed299ac3a998f011c380f2ded47f4866 upstream.
Fix ethernet header length field after stripping the mesh header
Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/CT5GNZSK28AI.2K6M69OXM9RW5@syracuse/ Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces") Reported-and-tested-by: Nicolas Escande nico.escande@gmail.com Signed-off-by: Felix Fietkau nbd@nbd.name Link: https://lore.kernel.org/r/20230711115052.68430-1-nbd@nbd.name Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/wireless/util.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/wireless/util.c b/net/wireless/util.c index 89c9ad6c886e..1783ab9d57a3 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -580,6 +580,8 @@ int ieee80211_strip_8023_mesh_hdr(struct sk_buff *skb) hdrlen += ETH_ALEN + 2; else if (!pskb_may_pull(skb, hdrlen)) return -EINVAL; + else + payload.eth.h_proto = htons(skb->len - hdrlen);
mesh_addr = skb->data + sizeof(payload.eth) + ETH_ALEN; switch (payload.flags & MESH_FLAGS_AE) {