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Date: Tue, 14 Jan 2020 14:54:48 +0000 From: Colin King <colin.king@...onical.com> To: Zhao Qiang <qiang.zhao@....com>, "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] net/wan/fsl_ucc_hdlc: fix out of bounds write on array utdm_info From: Colin Ian King <colin.king@...onical.com> 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@...onical.com> --- drivers/net/wan/fsl_ucc_hdlc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c index 94e870f48e21..9edd94679283 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.c +++ b/drivers/net/wan/fsl_ucc_hdlc.c @@ -73,7 +73,7 @@ static struct ucc_tdm_info utdm_primary_info = { }, }; -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) { -- 2.24.0
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