{"id":"CVE-2011-1751","state":"PUBLISHED","title":"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, whi","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.\"","publishedAt":"2012-06-21T15:00:00.000Z","updatedAt":"2024-08-06T22:37:25.758Z","severity":null,"assigner":"redhat","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://www.openwall.com/lists/oss-security/2011/05/19/2","http://rhn.redhat.com/errata/RHSA-2011-0534.html","http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca","http://secunia.com/advisories/44648","http://www.osvdb.org/73395","http://secunia.com/advisories/44393","http://secunia.com/advisories/44658","https://hermes.opensuse.org/messages/8572547","http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html","http://www.securityfocus.com/bid/47927","https://github.com/nelhage/virtunoid","https://bugzilla.redhat.com/show_bug.cgi?id=699773","http://secunia.com/advisories/44458","http://secunia.com/advisories/44660","http://blog.nelhage.com/2011/08/breaking-out-of-kvm/","https://www.ubuntu.com/usn/USN-1145-1/","http://secunia.com/advisories/44900","http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:39:55.290Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2011/1xxx/CVE-2011-1751.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2011-1751","state":"PUBLISHED","datePublished":"2012-06-21T15:00:00.000Z","dateUpdated":"2024-08-06T22:37:25.758Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2011-04-19T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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.\""}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2011/05/19/2","name":"[oss-security] 20110519 CVE-2011-1751 qemu: acpi_piix4: missing hotplug check during device  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