CVE-2016-6490
medium
CVSS v3
4.4
CVSS v4 NEW
—
VIR risk
4.4
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.
Predictions
Exploit likelihood
44%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 1:2.6+dfsg-3.1 |
| debian | bullseye | fixed | 1:2.6+dfsg-3.1 |
| debian | forky | fixed | 1:2.6+dfsg-3.1 |
| debian | sid | fixed | 1:2.6+dfsg-3.1 |
| debian | trixie | fixed | 1:2.6+dfsg-3.1 |
References
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1e7aed70144b4673fc26e73062064b6724795e5f
- http://www.openwall.com/lists/oss-security/2016/07/28/4
- http://www.openwall.com/lists/oss-security/2016/07/28/9
- https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.html
- https://security.gentoo.org/glsa/201609-01
- https://www.suse.com/security/cve/CVE-2016-6490.html
- https://security-tracker.debian.org/tracker/CVE-2016-6490
CWEs
CWE-120
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.