CVE-2011-1751

Good to know:

Date: June 21, 2012

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."

Language: C

Severity Score

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Top Fix

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Upgrade Version

CVSS v2

Base Score:
Access Vector (AV): ADJACENT_NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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