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."
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2012-06-21T15:00:00

Updated: 2024-08-06T22:37:25.758Z

Reserved: 2011-04-19T00:00:00

Link: CVE-2011-1751

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2012-06-21T15:55:09.613

Modified: 2024-11-21T01:26:56.190

Link: CVE-2011-1751

cve-icon Redhat

Severity : Important

Publid Date: 2011-05-18T00:00:00Z

Links: CVE-2011-1751 - Bugzilla