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From: Mathias Nyman <mathias.nyman@linux.intel.com>
To: <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>, Sergey Shtylyov <s.shtylyov@omp.ru>,
	Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: [PATCH 1/1] usb: host: xhci: use snprintf() in xhci_decode_trb()
Date: Thu, 30 Jun 2022 15:46:45 +0300	[thread overview]
Message-ID: <20220630124645.1805902-2-mathias.nyman@linux.intel.com> (raw)
In-Reply-To: <20220630124645.1805902-1-mathias.nyman@linux.intel.com>

From: Sergey Shtylyov <s.shtylyov@omp.ru>

Commit cbf286e8ef83 ("xhci: fix unsafe memory usage in xhci tracing")
apparently missed one sprintf() call in xhci_decode_trb() -- replace
it with the snprintf() call as well...

Found by Linux Verification Center (linuxtesting.org) with the SVACE static
analysis tool.

Fixes: cbf286e8ef83 ("xhci: fix unsafe memory usage in xhci tracing")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
---
 drivers/usb/host/xhci.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 28aaf031f9a8..1960b47acfb2 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2417,7 +2417,7 @@ static inline const char *xhci_decode_trb(char *str, size_t size,
 			field3 & TRB_CYCLE ? 'C' : 'c');
 		break;
 	case TRB_STOP_RING:
-		sprintf(str,
+		snprintf(str, size,
 			"%s: slot %d sp %d ep %d flags %c",
 			xhci_trb_type_string(type),
 			TRB_TO_SLOT_ID(field3),
-- 
2.25.1


      reply	other threads:[~2022-06-30 12:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-30 12:46 [PATCH 0/1] xhci feature for usb-next Mathias Nyman
2022-06-30 12:46 ` Mathias Nyman [this message]

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