// For flags

CVE-2016-7422

Qemu: virtio: null pointer dereference in virtqueu_map_desc

Severity Score

6.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

La función virtqueue_map_desc en hw/virtio/virtio.c en QEMU (también conocido como Quick Emulator) permite a administradores locales del SO invitado provocar una denegación de servicio (referencia a puntero NULL y caída del proceso QEMU) a través de un gran valor de longitud de búfer descriptor de I/O.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
Attack Vector
Adjacent
Attack Complexity
Medium
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-09-09 CVE Reserved
  • 2016-09-26 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
 Virtualization
Search vendor "Redhat" for product "Virtualization"
 4.0
Search vendor "Redhat" for product "Virtualization" and version "4.0"
-
Affected
in Redhat
Search vendor "Redhat"
 Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
 7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Safe
Qemu
Search vendor "Qemu"
 Qemu
Search vendor "Qemu" for product "Qemu"
 <= 2.7.1
Search vendor "Qemu" for product "Qemu" and version " <= 2.7.1"
-
Affected
Opensuse
Search vendor "Opensuse"
 Leap
Search vendor "Opensuse" for product "Leap"
 42.2
Search vendor "Opensuse" for product "Leap" and version "42.2"
-
Affected
Redhat
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 Openstack
Search vendor "Redhat" for product "Openstack"
 6.0
Search vendor "Redhat" for product "Openstack" and version "6.0"
-
Affected
Redhat
Search vendor "Redhat"
 Openstack
Search vendor "Redhat" for product "Openstack"
 7.0
Search vendor "Redhat" for product "Openstack" and version "7.0"
-
Affected
Redhat
Search vendor "Redhat"
 Openstack
Search vendor "Redhat" for product "Openstack"
 8
Search vendor "Redhat" for product "Openstack" and version "8"
-
Affected
Redhat
Search vendor "Redhat"
 Openstack
Search vendor "Redhat" for product "Openstack"
 9
Search vendor "Redhat" for product "Openstack" and version "9"
-
Affected
Redhat
Search vendor "Redhat"
 Openstack
Search vendor "Redhat" for product "Openstack"
 10
Search vendor "Redhat" for product "Openstack" and version "10"
-
Affected
Redhat
Search vendor "Redhat"
 Openstack
Search vendor "Redhat" for product "Openstack"
 11
Search vendor "Redhat" for product "Openstack" and version "11"
-
Affected