update to qemu-2.9.0-rc2

[pve-qemu-kvm.git] / debian / patches / extra / CVE-2016-8576-xhci-limit-the-number-of-link-trbs-we-are-willing-to.patch

diff --git a/debian/patches/extra/CVE-2016-8576-xhci-limit-the-number-of-link-trbs-we-are-willing-to.patch b/debian/patches/extra/CVE-2016-8576-xhci-limit-the-number-of-link-trbs-we-are-willing-to.patch
deleted file mode 100644 (file)
index 7019960..0000000
--- a/debian/patches/extra/CVE-2016-8576-xhci-limit-the-number-of-link-trbs-we-are-willing-to.patch
+++ /dev/null
@@ -1,69 +0,0 @@
-From b5ef1754de94247de307044b19e6bc3fa0ad5ba8 Mon Sep 17 00:00:00 2001
-From: Gerd Hoffmann <kraxel@redhat.com>
-Date: Mon, 10 Oct 2016 12:46:22 +0200
-Subject: [PATCH 2/4] xhci: limit the number of link trbs we are willing to
- process
-
-Needed to avoid we run in circles forever in case the guest builds
-an endless loop with link trbs.
-
-Reported-by: Li Qiang <liqiang6-s@360.cn>
-Tested-by: P J P <ppandit@redhat.com>
-Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-Message-id: 1476096382-7981-1-git-send-email-kraxel@redhat.com
----
- hw/usb/hcd-xhci.c | 10 ++++++++++
- 1 file changed, 10 insertions(+)
-
-diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
-index 281a2a5..8a9a31a 100644
---- a/hw/usb/hcd-xhci.c
-+++ b/hw/usb/hcd-xhci.c
-@@ -54,6 +54,8 @@
-  * to the specs when it gets them */
- #define ER_FULL_HACK
- 
-+#define TRB_LINK_LIMIT  4
-+
- #define LEN_CAP         0x40
- #define LEN_OPER        (0x400 + 0x10 * MAXPORTS)
- #define LEN_RUNTIME     ((MAXINTRS + 1) * 0x20)
-@@ -1000,6 +1002,7 @@ static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
-                                dma_addr_t *addr)
- {
-     PCIDevice *pci_dev = PCI_DEVICE(xhci);
-+    uint32_t link_cnt = 0;
- 
-     while (1) {
-         TRBType type;
-@@ -1026,6 +1029,9 @@ static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb,
-             ring->dequeue += TRB_SIZE;
-             return type;
-         } else {
-+            if (++link_cnt > TRB_LINK_LIMIT) {
-+                return 0;
-+            }
-             ring->dequeue = xhci_mask64(trb->parameter);
-             if (trb->control & TRB_LK_TC) {
-                 ring->ccs = !ring->ccs;
-@@ -1043,6 +1049,7 @@ static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
-     bool ccs = ring->ccs;
-     /* hack to bundle together the two/three TDs that make a setup transfer */
-     bool control_td_set = 0;
-+    uint32_t link_cnt = 0;
- 
-     while (1) {
-         TRBType type;
-@@ -1058,6 +1065,9 @@ static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring)
-         type = TRB_TYPE(trb);
- 
-         if (type == TR_LINK) {
-+            if (++link_cnt > TRB_LINK_LIMIT) {
-+                return -length;
-+            }
-             dequeue = xhci_mask64(trb.parameter);
-             if (trb.control & TRB_LK_TC) {
-                 ccs = !ccs;
--- 
-2.1.4
-