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[PATCH 4/5] usb/xhci: sanity check packet size
From: |
Gerd Hoffmann |
Subject: |
[PATCH 4/5] usb/xhci: sanity check packet size |
Date: |
Mon, 3 May 2021 11:14:45 +0200 |
Make sure the usb packet size is within the
bounds of the endpoint configuration.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/usb/hcd-xhci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 46212b1e695a..7acfb8137bc9 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -1568,6 +1568,11 @@ static int xhci_setup_packet(XHCITransfer *xfer)
qemu_sglist_destroy(&xfer->sgl);
return -1;
}
+ if (xfer->packet.iov.size > ep->max_packet_size) {
+ usb_packet_unmap(&xfer->packet, &xfer->sgl);
+ qemu_sglist_destroy(&xfer->sgl);
+ return -1;
+ }
DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n",
xfer->packet.pid, ep->dev->addr, ep->nr);
return 0;
--
2.30.2
- [PATCH 0/5] usb: fix some memory allocation issues., Gerd Hoffmann, 2021/05/03
- [PATCH 3/5] usb/mtp: avoid dynamic stack allocation, Gerd Hoffmann, 2021/05/03
- [PATCH 1/5] usb/hid: avoid dynamic stack allocation, Gerd Hoffmann, 2021/05/03
- [PATCH 2/5] usb/redir: avoid dynamic stack allocation (CVE-2021-3527), Gerd Hoffmann, 2021/05/03
- [PATCH 5/5] usb: limit combined packets to 1 MiB, Gerd Hoffmann, 2021/05/03
- [PATCH 4/5] usb/xhci: sanity check packet size,
Gerd Hoffmann <=
- Re: [PATCH 0/5] usb: fix some memory allocation issues., Philippe Mathieu-Daudé, 2021/05/03