File 0209-usb-ehci-fix-memory-leak-in-ehci.patch of Package qemu-linux-user.19799

Overview Repositories Revisions Requests Users Attributes Meta

File 0209-usb-ehci-fix-memory-leak-in-ehci.patch of Package qemu-linux-user.19799

From: Li Qiang <liqiang6-s@360.cn>
Date: Tue, 7 Feb 2017 18:42:55 -0800
Subject: usb: ehci: fix memory leak in ehci

In usb_ehci_init function, it initializes 's->ipacket', but there
is no corresponding function to free this. As the ehci can be hotplug
and unplug, this will leak host memory leak. In order to make the
hierarchy clean, we should add a ehci pci finalize function, then call
the clean function in ehci device.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 589a85b8.3c2b9d0a.b8e6.1434@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit d710e1e7bd3d5bfc26b631f02ae87901ebe646b0)
[BR: BSC#1043073 CVE-2017-9374]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/usb/hcd-ehci-pci.c | 9 +++++++++
 hw/usb/hcd-ehci.c     | 5 +++++
 hw/usb/hcd-ehci.h     | 1 +
 3 files changed, 15 insertions(+)

diff --git a/hw/usb/hcd-ehci-pci.c b/hw/usb/hcd-ehci-pci.c
index 56577051e2bebde93aea578d3ff4..6dedcb89895d34ad848d98ff13d4 100644
--- a/hw/usb/hcd-ehci-pci.c
+++ b/hw/usb/hcd-ehci-pci.c
@@ -89,6 +89,14 @@ static void usb_ehci_pci_init(Object *obj)
     usb_ehci_init(s, DEVICE(obj));
 }
 
+static void usb_ehci_pci_finalize(Object *obj)
+{
+    EHCIPCIState *i = PCI_EHCI(obj);
+    EHCIState *s = &i->ehci;
+
+    usb_ehci_finalize(s);
+}
+
 static void usb_ehci_pci_exit(PCIDevice *dev)
 {
     EHCIPCIState *i = PCI_EHCI(dev);
@@ -159,6 +167,7 @@ static const TypeInfo ehci_pci_type_info = {
     .parent = TYPE_PCI_DEVICE,
     .instance_size = sizeof(EHCIPCIState),
     .instance_init = usb_ehci_pci_init,
+    .instance_finalize = usb_ehci_pci_finalize,
     .abstract = true,
     .class_init = ehci_class_init,
 };
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index b8559e271a600e7500ca6fdbdf4e..ab61536fdae1c4e1fba8ee1a7b57 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2546,6 +2546,11 @@ void usb_ehci_init(EHCIState *s, DeviceState *dev)
                                 &s->mem_ports);
 }
 
+void usb_ehci_finalize(EHCIState *s)
+{
+    usb_packet_cleanup(&s->ipacket);
+}
+
 /*
  * vim: expandtab ts=4
  */
diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h
index 30218423c8cffb22b72543b02fce..c7c1407a69f1654cfae8a96f7f0d 100644
--- a/hw/usb/hcd-ehci.h
+++ b/hw/usb/hcd-ehci.h
@@ -322,6 +322,7 @@ struct EHCIState {
 extern const VMStateDescription vmstate_ehci;
 
 void usb_ehci_init(EHCIState *s, DeviceState *dev);
+void usb_ehci_finalize(EHCIState *s);
 void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp);
 void usb_ehci_unrealize(EHCIState *s, DeviceState *dev, Error **errp);
 void ehci_reset(void *opaque);

Places

File 0209-usb-ehci-fix-memory-leak-in-ehci.patch of Package qemu-linux-user.19799

Places