CVE-2016-6490
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 (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.
Does this matter?
Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own.
Description
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 (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.39% probability · 33th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- qemu/qemu
- Source
- secalert@redhat.com
EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1e7aed70144b4673fc26e73062064b6724795e5f
- http://www.openwall.com/lists/oss-security/2016/07/28/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/28/9Mailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.htmlPatch, Third Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1e7aed70144b4673fc26e73062064b6724795e5f
- http://www.openwall.com/lists/oss-security/2016/07/28/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/28/9Mailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.htmlPatch, Third Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.