diff options
| author | Mark Salyzyn <salyzyn@android.com> | 2018-07-31 15:02:13 -0700 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2018-08-01 09:12:35 +0200 |
| commit | 7992c18810e568b95c869b227137a2215702a805 (patch) | |
| tree | 33bfb84fe8b5236a5793fdd114f04eaed65fc8c9 /net | |
| parent | b3cadaa485f0c20add1644a5c877b0765b285c0c (diff) | |
Bluetooth: hidp: buffer overflow in hidp_process_report
CVE-2018-9363
The buffer length is unsigned at all layers, but gets cast to int and
checked in hidp_process_report and can lead to a buffer overflow.
Switch len parameter to unsigned int to resolve issue.
This affects 3.18 and newer kernels.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Fixes: a4b1b5877b514b276f0f31efe02388a9c2836728 ("HID: Bluetooth: hidp: make sure input buffers are big enough")
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-bluetooth@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: security@kernel.org
Cc: kernel-team@android.com
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/hidp/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 6f3eaf2fb94f..253975cce943 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -431,8 +431,8 @@ static void hidp_del_timer(struct hidp_session *session) del_timer(&session->timer); } -static void hidp_process_report(struct hidp_session *session, - int type, const u8 *data, int len, int intr) +static void hidp_process_report(struct hidp_session *session, int type, + const u8 *data, unsigned int len, int intr) { if (len > HID_MAX_BUFFER_SIZE) len = HID_MAX_BUFFER_SIZE; |