Home/CVE/The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators
CVE

CVE-2016-7422

The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators

The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.

MEDIUM · CVSS 6 EPSS 0.00094
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules2 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

4
qemu<= 2.7.1
opensuse leapall versions
redhat openstackall versions
redhat virtualizationall versions
◈

Sigma Hunt Rules

2
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
productmediumPowershell Detect Virtualization Environment
▣

Scoring & Timeline

6
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Dec 2016 · 12:59 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
⚑

Vendor Advisories

5
suse-csafopenSUSE-SU-2024:11287-1
rhsaRHSA-2017:2408Moderate
rhsaRHSA-2017:2392Low
suse-csafSUSE-SU-2016:2879-1
usnUSN-3125-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://git.qemu.org/?p=qemu.git
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/16/10Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/16/4Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/92996Third Party AdvisoryVDB Entry
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.htmlPatchThird Party Advisory
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