Buffer overflow in Qemu
CVE-2016-7422
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…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (26.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Qemu
- Opensuse Leap — versions 42.2
- Redhat Enterprise_linux — versions 7.0
- Redhat Openstack — versions 6.0, 7.0, 8
- Redhat Virtualization — versions 4.0
- N/a — versions n/a
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_CONFIRM)
- [qemu-devel] 20160915 [PATCH] virtio: add check for descriptor's mapped address (mailing-list, x_refsource_MLIST, Patch, Third Party Advisory)
- RHSA-2017:2392 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- openSUSE-SU-2016:3237 (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- GLSA-201609-01 (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- 92996 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID)
- [oss-security] 20160916 Re: CVE request Qemu: virtio: null pointer dereference in virtqueu_map_desc (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- [oss-security] 20160916 CVE request Qemu: virtio: null pointer dereference in virtqueu_map_desc (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- RHSA-2017:2408 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-7422?
- CVE-2016-7422 is a medium-severity vulnerability in Qemu, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.0/10. Published 2016-12-10.
- How severe is CVE-2016-7422?
- Medium severity. CVSS v3 base score is 6.0 out of 10.