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."
Published 2012-06-21 15:55:10
Updated 2023-02-13 04:30:49
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionInput validationExecute codeDenial of service

Threat overview for CVE-2011-1751

Top countries where our scanners detected CVE-2011-1751
Top open port discovered on systems with this issue 21
IPs affected by CVE-2011-1751 1
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Exploit prediction scoring system (EPSS) score for CVE-2011-1751

0.11%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2011-1751

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.4
HIGH AV:A/AC:M/Au:S/C:C/I:C/A:C
4.4
10.0
NIST

CWE ids for CVE-2011-1751

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2011-1751

Products affected by CVE-2011-1751

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