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| author | Daniel Drake <dsd@gentoo.org> | 2007-11-22 22:03:42 +0000 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2007-11-29 18:08:47 -0500 |
| commit | 01e1f045e65b683fe7203b1e16a915bbb94c15fe (patch) | |
| tree | 480686e2f3c5c49bf56ae06ef98998335bdaa38a | |
| parent | a10605e599a7873417043fe2bb559abe719f8a1a (diff) | |
| download | blackbird-op-linux-01e1f045e65b683fe7203b1e16a915bbb94c15fe.tar.gz blackbird-op-linux-01e1f045e65b683fe7203b1e16a915bbb94c15fe.zip | |
ieee80211: fix unaligned access in ieee80211_copy_snap
There is no guarantee that data+SNAP_SIZE will reside on an even numbered
address, so doing a 16 bit read will cause an unaligned access in some
situations. Based on a patch from Jun Sun.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | net/ieee80211/ieee80211_tx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c index a4c3c51140a3..6d06f1385e28 100644 --- a/net/ieee80211/ieee80211_tx.c +++ b/net/ieee80211/ieee80211_tx.c @@ -144,7 +144,8 @@ static int ieee80211_copy_snap(u8 * data, u16 h_proto) snap->oui[1] = oui[1]; snap->oui[2] = oui[2]; - *(u16 *) (data + SNAP_SIZE) = htons(h_proto); + h_proto = htons(h_proto); + memcpy(data + SNAP_SIZE, &h_proto, sizeof(u16)); return SNAP_SIZE + sizeof(u16); } |
