From e51cbe4cc7db6daf388a5dfb2c889b4070a57b6a Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Sat, 18 Jan 2020 21:49:31 +0100
Subject: osmo_libusb: Check return of libusb_get_string_descriptor_ascii()

Change-Id: Ifc0133737627a8277635f8f3662b3f6e922be149
Closes: CID#207713
---
 src/usb/osmo_libusb.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src')

diff --git a/src/usb/osmo_libusb.c b/src/usb/osmo_libusb.c
index 9ad62403..7a13a7e3 100644
--- a/src/usb/osmo_libusb.c
+++ b/src/usb/osmo_libusb.c
@@ -334,6 +334,12 @@ libusb_device *osmo_libusb_find_matching_dev_serial(struct libusb_context *luctx
 			}
 			rc = libusb_get_string_descriptor_ascii(devh, dev_desc.iSerialNumber,
 								(uint8_t *) strbuf, sizeof(strbuf));
+			if (rc < 0) {
+				LOGP(DLUSB, LOGL_ERROR, "Cannot read USB Descriptor: %s\n",
+					libusb_strerror(rc));
+				libusb_close(devh);
+				continue;
+			}
 			libusb_close(devh);
 			if (strcmp(strbuf, serial))
 				continue;
-- 
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