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CVE-2011-1751
Published: Jun 21, 2012
Modified: Aug 6, 2024
PUBLISHED
Description
The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to "active qemu timers."
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
[oss-security] 20110519 CVE-2011-1751 qemu: acpi_piix4: missing hotplug check during device removal
mailing-list
x_refsource_MLIST
RHSA-2011:0534
vendor-advisory
x_refsource_REDHAT
44648
third-party-advisory
x_refsource_SECUNIA
73395
vdb-entry
x_refsource_OSVDB
44393
third-party-advisory
x_refsource_SECUNIA
44658
third-party-advisory
x_refsource_SECUNIA
SUSE-SU-2011:0533
vendor-advisory
x_refsource_SUSE
[Qemu-devel] 20110519 [PATCH] Ignore pci unplug requests for unpluggable devices
mailing-list
x_refsource_MLIST
47927
vdb-entry
x_refsource_BID
https://github.com/nelhage/virtunoid
x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=699773
x_refsource_MISC
44458
third-party-advisory
x_refsource_SECUNIA
44660
third-party-advisory
x_refsource_SECUNIA
http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
x_refsource_MISC
USN-1145-1
vendor-advisory
x_refsource_UBUNTU
44900
third-party-advisory
x_refsource_SECUNIA
openSUSE-SU-2011:0510
vendor-advisory
x_refsource_SUSE
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