CVE-2017-9503

Name: CVE-2017-9503
Creator: NVD / NIST
Published: 2017-06-16T22:29:00.383+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2017-9503 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. QEMU (aka Quick Emulator), when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors involving megasas command processing.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

Description

QEMU (aka Quick Emulator), when built with MegaRAID SAS 8708EM2 Host Bus Adapter emulation support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors involving megasas command processing.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.41%

33.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 2.9.1
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://www.openwall.com/lists/oss-security/2017/06/08/1Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/99010Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1459477Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlThird Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01309.htmlIssue Tracking, Patch, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01313.htmlIssue Tracking, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/06/08/1Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/99010Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1459477Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlThird Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01309.htmlIssue Tracking, Patch, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg01313.htmlIssue Tracking, Patch, Third Party Advisory

Timeline

Published: Jun 16, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-9503?

How severe is CVE-2017-9503?

CVE-2017-9503 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2017-9503?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST