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usb: gadget: fsl_qe_udc: validate endpoint index for ch9 udc
author
Ma Ke
<make_ruc2021@163.com>
Wed, 28 Jun 2023 08:15:11 +0000
(16:15 +0800)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Tue, 25 Jul 2023 16:18:05 +0000
(18:18 +0200)
We should verify the bound of the array to assure that host
may not manipulate the index to point past endpoint array.
Signed-off-by: Ma Ke <make_ruc2021@163.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link:
https://lore.kernel.org/r/20230628081511.186850-1-make_ruc2021@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/gadget/udc/fsl_qe_udc.c
patch
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blob
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history
diff --git
a/drivers/usb/gadget/udc/fsl_qe_udc.c
b/drivers/usb/gadget/udc/fsl_qe_udc.c
index
9c5dc1c
..
4aae86b
100644
(file)
--- a/
drivers/usb/gadget/udc/fsl_qe_udc.c
+++ b/
drivers/usb/gadget/udc/fsl_qe_udc.c
@@
-1959,6
+1959,8
@@
static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value,
} else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
/* Get endpoint status */
int pipe = index & USB_ENDPOINT_NUMBER_MASK;
+ if (pipe >= USB_MAX_ENDPOINTS)
+ goto stall;
struct qe_ep *target_ep = &udc->eps[pipe];
u16 usep;