net/wan/fsl_ucc_hdlc: fix out of bounds write on array utdm_info
[ Upstream commit ddf420390526ede3b9ff559ac89f58cb59d9db2f ]
Array utdm_info is declared as an array of MAX_HDLC_NUM (4) elements
however up to UCC_MAX_NUM (8) elements are potentially being written
to it. Currently we have an array out-of-bounds write error on the
last 4 elements. Fix this by making utdm_info UCC_MAX_NUM elements in
size.
Addresses-Coverity: ("Out-of-bounds write")
Fixes: c19b6d246a35 ("drivers/net: support hdlc function for QE-UCC")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index b2c1e87..af85a1b 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -77,7 +77,7 @@
},
};
-static struct ucc_tdm_info utdm_info[MAX_HDLC_NUM];
+static struct ucc_tdm_info utdm_info[UCC_MAX_NUM];
static int uhdlc_init(struct ucc_hdlc_private *priv)
{