CVE-2011-1751
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."
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| 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 | |
| qemu | qemu | 0.4.1 | |
| qemu | qemu | 0.4.2 | |
| qemu | qemu | 0.4.3 | |
| qemu | qemu | 0.5.0 | |
| qemu | qemu | 0.5.1 | |
| qemu | qemu | 0.5.2 | |
| qemu | qemu | 0.5.3 | |
| qemu | qemu | 0.5.4 | |
| qemu | qemu | 0.5.5 | |
| qemu | qemu | 0.6.0 | |
| qemu | qemu | 0.6.1 | |
| qemu | qemu | 0.7.0 | |
| qemu | qemu | 0.7.1 | |
| qemu | qemu | 0.7.2 | |
| qemu | qemu | 0.8.0 | |
| qemu | qemu | 0.8.1 | |
| qemu | qemu | 0.8.2 | |
| qemu | qemu | 0.9.0 | |
| qemu | qemu | 0.9.1 | |
| qemu | qemu | 0.9.1-5 | |
| qemu | qemu | 0.10.0 | |
| qemu | qemu | 0.10.1 | |
| qemu | qemu | 0.10.2 | |
| qemu | qemu | 0.10.3 | |
| qemu | qemu | 0.10.4 | |
| qemu | qemu | 0.10.5 | |
| qemu | qemu | 0.10.6 | |
| qemu | qemu | 0.11.0 | |
| qemu | qemu | 0.11.0-rc0 | |
| qemu | qemu | 0.11.0-rc1 | |
| qemu | qemu | 0.11.0-rc2 | |
| qemu | qemu | 0.11.1 | |
| qemu | qemu | 0.12.0 | |
| qemu | qemu | 0.12.1 | |
| qemu | qemu | 0.12.2 | |
| qemu | qemu | 0.12.3 | |
| qemu | qemu | 0.12.4 | |
| qemu | qemu | 0.12.5 | |
| qemu | qemu | 0.13.0 | |
| qemu | qemu | 0.14.0 | |
| qemu | qemu | 0.14.1 | |
| qemu | qemu | 0.15.0 | |
| qemu | qemu | 1.0 | |
| qemu | qemu | 1.0.1 | |
| qemu | qemu | 1.1 | |
References
- http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca
- http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html
- http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html
- http://rhn.redhat.com/errata/RHSA-2011-0534.html
- http://secunia.com/advisories/44393
- http://secunia.com/advisories/44458
- http://secunia.com/advisories/44648
- http://secunia.com/advisories/44658
- http://secunia.com/advisories/44660
- http://secunia.com/advisories/44900
- http://www.openwall.com/lists/oss-security/2011/05/19/2
- http://www.osvdb.org/73395
- http://www.securityfocus.com/bid/47927
- https://bugzilla.redhat.com/show_bug.cgi?id=699773
- https://github.com/nelhage/virtunoid
- https://hermes.opensuse.org/messages/8572547
- https://www.ubuntu.com/usn/USN-1145-1/
- http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca
- http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html
- http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html
- http://rhn.redhat.com/errata/RHSA-2011-0534.html
- http://secunia.com/advisories/44393
- http://secunia.com/advisories/44458
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.