CVE-2011-1751

CVE Details

Release Date:	2012-06-21
Impact:	Important	What is this?

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.

See more information about CVE-2011-1751 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	7.4
Vector String:	AV:A/AC:M/Au:S/C:C/I:C/A:C
Version:	2.0
Attack Vector:	Adjacent Network
Attack Complexity:	Medium
Authentication:	Single
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (qemu-kvm)	ELSA-2011-0534	2011-05-28