Strix
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CVE-2011-1751

UnknownEPSS 0.75%

Last modified

CVE-2011-1751 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 0.75% chance of exploitation in the next 30 days.

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

EPSS Probability
0.75%

50.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
QemuQemu0.1.0—
QemuQemu0.1.1—
QemuQemu0.1.2—
QemuQemu0.1.3—
QemuQemu0.1.4—
QemuQemu0.1.5—
QemuQemu0.1.6—
QemuQemu0.2.0—
QemuQemu0.3.0—
QemuQemu0.4.0—
QemuQemu0.4.1—
QemuQemu0.4.2—
QemuQemu0.4.3—
QemuQemu0.5.0—
QemuQemu0.5.1—
QemuQemu0.5.2—
QemuQemu0.5.3—
QemuQemu0.5.4—
QemuQemu0.5.5—
QemuQemu0.6.0—
QemuQemu0.6.1—
QemuQemu0.7.0—
QemuQemu0.7.1—
QemuQemu0.7.2—
QemuQemu0.8.0—
QemuQemu0.8.1—
QemuQemu0.8.2—
QemuQemu0.9.0—
QemuQemu0.9.1—
QemuQemu0.9.1-5—
QemuQemu0.10.0—
QemuQemu0.10.1—
QemuQemu0.10.2—
QemuQemu0.10.3—
QemuQemu0.10.4—
QemuQemu0.10.5—
QemuQemu0.10.6—
QemuQemu0.11.0—
QemuQemu0.11.0-rc0—
QemuQemu0.11.0-rc1—
QemuQemu0.11.0-rc2—
QemuQemu0.11.1—
QemuQemu0.12.0—
QemuQemu0.12.1—
QemuQemu0.12.2—
QemuQemu0.12.3—
QemuQemu0.12.4—
QemuQemu0.12.5—
QemuQemu0.13.0—
QemuQemu0.14.0—

Showing 50 of 55 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-1751?
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."
How severe is CVE-2011-1751?
Severity scoring for CVE-2011-1751 is pending analysis. The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.
How do I fix CVE-2011-1751?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-1751?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST