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."
References
Configurations
Configuration 1 (hide)
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History
21 Nov 2024, 01:26
| Type | Values Removed | Values Added |
|---|---|---|
| References | () http://blog.nelhage.com/2011/08/breaking-out-of-kvm/ - | |
| References | () http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca - | |
| References | () http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html - | |
| References | () http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html - | |
| References | () http://rhn.redhat.com/errata/RHSA-2011-0534.html - | |
| References | () http://secunia.com/advisories/44393 - Vendor Advisory | |
| References | () http://secunia.com/advisories/44458 - Vendor Advisory | |
| References | () http://secunia.com/advisories/44648 - Vendor Advisory | |
| References | () http://secunia.com/advisories/44658 - Vendor Advisory | |
| References | () http://secunia.com/advisories/44660 - Vendor Advisory | |
| References | () http://secunia.com/advisories/44900 - Vendor Advisory | |
| References | () http://www.openwall.com/lists/oss-security/2011/05/19/2 - | |
| References | () http://www.osvdb.org/73395 - | |
| References | () http://www.securityfocus.com/bid/47927 - | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=699773 - | |
| References | () https://github.com/nelhage/virtunoid - | |
| References | () https://hermes.opensuse.org/messages/8572547 - | |
| References | () https://www.ubuntu.com/usn/USN-1145-1/ - |
Information
Published : 2012-06-21 15:55
Updated : 2024-11-21 01:26
NVD link : CVE-2011-1751
Mitre link : CVE-2011-1751
CVE.ORG link : CVE-2011-1751
JSON object : View
Products Affected
qemu
- qemu
CWE
CWE-20
Improper Input Validation