diff options
Diffstat (limited to 'app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch')
-rw-r--r-- | app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch b/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch deleted file mode 100644 index 9617cd5dc88..00000000000 --- a/app-emulation/qemu/files/qemu-2.7.0-CVE-2016-8576.patch +++ /dev/null @@ -1,61 +0,0 @@ -From 20009bdaf95d10bf748fa69b104672d3cfaceddf Mon Sep 17 00:00:00 2001 -From: Gerd Hoffmann <address@hidden> -Date: Fri, 7 Oct 2016 10:15:29 +0200 -Subject: [PATCH] xhci: limit the number of link trbs we are willing to process - -Signed-off-by: Gerd Hoffmann <address@hidden> ---- - 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 726435c..ee4fa48 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; --- -1.8.3.1 |