Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2016-6490
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:2.7.0:rc0:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-6490
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-6490
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
4.4
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
0.8
|
3.6
|
NIST |
CWE ids for CVE-2016-6490
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-6490
-
http://www.openwall.com/lists/oss-security/2016/07/28/9
oss-security - Re: CVE Request Qemu: virtio: infinite loop in virtqueue_popMailing List;Third Party Advisory
-
https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.html
[Qemu-devel] [PATCH] virtio: check vring descriptor buffer lengthPatch;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2016/07/28/4
oss-security - CVE Request Qemu: virtio: infinite loop in virtqueue_popMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/201609-01
QEMU: Multiple vulnerabilities (GLSA 201609-01) — Gentoo securityThird Party Advisory
-
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1e7aed70144b4673fc26e73062064b6724795e5f
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