Improper Input Validation Affecting qemu-kvm-tools package, versions <2:0.12.1.2-2.160.el6


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.75% (50th percentile)

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  • Snyk IDSNYK-ORACLE6-QEMUKVMTOOLS-2459863
  • published10 Apr 2022
  • disclosed21 Jun 2012

Introduced: 21 Jun 2012

CVE-2011-1751  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Oracle:6 qemu-kvm-tools to version 2:0.12.1.2-2.160.el6 or higher.
This issue was patched in ELSA-2011-0534.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-tools package and not the qemu-kvm-tools package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

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."

CVSS Base Scores

version 3.1