CVE-2016-9922
medium
CVSS v3
5.5
CVSS v4 NEW
—
VIR risk
5.5
Description
The cirrus_do_copy function in hw/display/cirrus_vga.c in QEMU (aka Quick Emulator), when cirrus graphics mode is VGA, allows local guest OS privileged users to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving blit pitch values.
Predictions
Exploit likelihood
55%
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 | 1:2.8+dfsg-1 |
| debian | bullseye | fixed | 1:2.8+dfsg-1 |
| debian | forky | fixed | 1:2.8+dfsg-1 |
| debian | sid | fixed | 1:2.8+dfsg-1 |
| debian | trixie | fixed | 1:2.8+dfsg-1 |
References
- http://git.qemu-project.org/?p=qemu.git%3Ba=commit%3Bh=4299b90e9ba9ce5ca9024572804ba751aa1a7e70
- http://www.openwall.com/lists/oss-security/2016/12/09/1
- http://www.securityfocus.com/bid/94803
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- https://bugzilla.redhat.com/show_bug.cgi?id=1334398
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg00442.html
- https://www.suse.com/security/cve/CVE-2016-9922.html
- https://security-tracker.debian.org/tracker/CVE-2016-9922
CWEs
CWE-369
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.