CVE-2016-5338
HIGHCVSS 7.8/10EPSS 0.50%
Last modified
CVE-2016-5338 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The (1) esp_reg_read and (2) esp_reg_write functions in hw/scsi/esp.c in QEMU allow local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the QEMU host via vectors related to the information transfer buffer.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
Description
The (1) esp_reg_read and (2) esp_reg_write functions in hw/scsi/esp.c in QEMU allow local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the QEMU host via vectors related to the information transfer buffer.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 2.6.2 |
| Canonical | Ubuntu Linux | 12.04 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Debian | Debian Linux | 8.0 |
References
- http://www.openwall.com/lists/oss-security/2016/06/07/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/08/14Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/91079Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3047-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3047-2Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg01507.htmlMailing List, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/07/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/06/08/14Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/91079Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3047-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3047-2Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg01507.htmlMailing List, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/201609-01Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-5338?
The (1) esp_reg_read and (2) esp_reg_write functions in hw/scsi/esp.c in QEMU allow local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the QEMU host via vectors related to the information transfer buffer.
How severe is CVE-2016-5338?
CVE-2016-5338 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.
How do I fix CVE-2016-5338?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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