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Commit 808693b4 authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "USB: core: harden cdc_parse_cdc_header"

parents c9777953 48af3ce0

drivers/usb/core/message.c

+4 −0
Original line number Diff line number Diff line
@@ -2070,6 +2070,10 @@ int cdc_parse_cdc_header(struct usb_cdc_parsed_header *hdr, 
			elength = 1;

			goto next_desc;

		}

		if ((buflen < elength) || (elength < 3)) {

			dev_err(&intf->dev, "invalid descriptor buffer length\n");

			break;

		}

		if (buffer[1] != USB_DT_CS_INTERFACE) {

			dev_err(&intf->dev, "skipping garbage\n");

			goto next_desc;