CVE-2011-1751

HighCVSS 7.4/10Last modified Jun 16, 2026

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."

Metrics

CVSS 2.0 7.4/10AV:A/AC:M/Au:S/C:C/I:C/A:C

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Jun 21, 2012
Last modified: Jun 16, 2026
NVD status: Modified

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