CVE-2011-1751

qemu-kvm - Use After Free

Title source: llm

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."

References (18)

Core 18

Core References

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2011-0534.html

Various Sources vendor-advisory x_refsource_suse

https://hermes.opensuse.org/messages/8572547

Mailing List mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2011/05/19/2

Patch x_refsource_confirm

http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44648

Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb

http://www.osvdb.org/73395

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44393

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44658

Various Sources mailing-list x_refsource_mlist

http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/47927

Various Sources x_refsource_misc

https://github.com/nelhage/virtunoid

View Writeup ZIP pw:eip

Issue Tracking x_refsource_misc

https://bugzilla.redhat.com/show_bug.cgi?id=699773

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44458

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44660

Various Sources x_refsource_misc

http://blog.nelhage.com/2011/08/breaking-out-of-kvm/

Vendor Advisory vendor-advisory x_refsource_ubuntu

https://www.ubuntu.com/usn/USN-1145-1/

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44900

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html

Scores

EPSS 0.0037

EPSS Percentile 58.9%

Details

CWE

CWE-20

Status published

Products (45)

qemu/qemu 0.1.0

qemu/qemu 0.1.1

qemu/qemu 0.1.2

qemu/qemu 0.1.3

qemu/qemu 0.1.4

qemu/qemu 0.1.5

qemu/qemu 0.1.6

qemu/qemu 0.2.0

qemu/qemu 0.3.0

qemu/qemu 0.4.0

... and 35 more

Published Jun 21, 2012

Tracked Since Feb 18, 2026