CVE-2016-7422
Qemu: virtio: null pointer dereference in virtqueu_map_desc
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
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.
KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. The following packages have been upgraded to a later upstream version: qemu-kvm-rhev. Security Fix: A stack buffer overflow flaw was found in the Quick Emulator built with the Network Block Device client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2016-09-09 CVE Reserved
- 2016-09-26 CVE Published
- 2024-08-06 CVE Updated
- 2025-03-30 EPSS 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
References (11)
| URL | Tag | Source |
|---|---|---|
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=973e7170dddefb491a48df5cba33b2ae151013a0 | X_refsource_confirm | |
| http://www.openwall.com/lists/oss-security/2016/09/16/10 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2016/09/16/4 | Mailing List |
|
| http://www.securityfocus.com/bid/92996 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.html | 2023-02-12 |
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html | 2023-02-12 | |
| https://access.redhat.com/errata/RHSA-2017:2392 | 2023-02-12 | |
| https://access.redhat.com/errata/RHSA-2017:2408 | 2023-02-12 | |
| https://security.gentoo.org/glsa/201609-01 | 2023-02-12 | |
| https://access.redhat.com/security/cve/CVE-2016-7422 | 2017-08-01 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1376755 | 2017-08-01 |
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 Search vendor "Redhat" | 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
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