CVE-2016-9921 — Vulnetix

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CVE-2016-9921 PUBLISHED

Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to a divide by zero issue. It could occur while copying VGA data when cirrus graphics mode was set to be VGA. A privileged user inside guest could use this flaw to crash the Qemu process instance on the host, resulting in DoS.

EPSS 0.10% · 28.4th percentile

Risk Scores

EPSS Score

0.10%

28.4th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:14.04:LTS	qemu	0, 1.5.0+dfsg-3ubuntu5, 1.5.0+dfsg-3ubuntu6
Ubuntu:16.04:LTS	qemu	0, 1:2.3+dfsg-5ubuntu9, 1:2.3+dfsg-5ubuntu10

Timeline

Dec 23, 2016 CVE Published
Feb 4, 2022 EPSS Score
Mar 28, 2022 EPSS Score
May 19, 2022 EPSS Score
Jul 10, 2022 EPSS Score
Sep 1, 2022 EPSS Score
Oct 23, 2022 EPSS Score
Dec 14, 2022 EPSS Score
Feb 4, 2023 EPSS Score
Mar 7, 2023 EPSS Score
Mar 28, 2023 EPSS Score
May 19, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2016-9921 third-party-advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg00442.html third-party-advisory
https://ubuntu.com/security/notices/USN-3261-1 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2016-9921 third-party-advisory

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