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| author | Arend van Spriel <arend.vanspriel@broadcom.com> | 2017-07-07 23:09:06 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 08:42:19 +0300 |
| commit | 414848bba6ab91fe12ca8105b4652c4aa6f4b574 (patch) | |
| tree | acbce0fd04a97d9d84c9742c9ebbffbf00625ed1 /Documentation/io-mapping.txt | |
| parent | 181dda46a314a34515c444e9fe7e71298cd24839 (diff) | |
| download | linux-414848bba6ab91fe12ca8105b4652c4aa6f4b574.tar.xz | |
brcmfmac: fix possible buffer overflow in brcmf_cfg80211_mgmt_tx()
commit 8f44c9a41386729fea410e688959ddaa9d51be7c upstream.
The lower level nl80211 code in cfg80211 ensures that "len" is between
25 and NL80211_ATTR_FRAME (2304). We subtract DOT11_MGMT_HDR_LEN (24) from
"len" so thats's max of 2280. However, the action_frame->data[] buffer is
only BRCMF_FIL_ACTION_FRAME_SIZE (1800) bytes long so this memcpy() can
overflow.
memcpy(action_frame->data, &buf[DOT11_MGMT_HDR_LEN],
le16_to_cpu(action_frame->len));
Fixes: 18e2f61db3b70 ("brcmfmac: P2P action frame tx.")
Reported-by: "freenerguo(郭大兴)" <freenerguo@tencent.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/io-mapping.txt')
0 files changed, 0 insertions, 0 deletions