CVE & CISA-KEV Catalog

CVE-2016-8668

MEDIUM

6.0

CVSS v3

Description

The rocker_io_writel function in hw/net/rocker/rocker.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging failure to limit DMA buffer size.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

qemuDebian

Fixed in:1:2.8+dfsg-1CVE-2016-8668

Fixed in:1:2.8+dfsg-1CVE-2016-8668

Fixed in:1:2.8+dfsg-1CVE-2016-8668

Fixed in:1:2.8+dfsg-1CVE-2016-8668

qemuUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-systemUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-aarch64Ubuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-armUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-mipsUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-miscUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-ppcUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-s390xUbuntu

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-sparcUbuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

qemu-system-x86Ubuntu

Fixed in:2.0.0+dfsg-2ubuntu1.30USN-3125-1

Fixed in:1:2.5+dfsg-5ubuntu10.6USN-3125-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.39%probability of exploitation in 30 days

31stpercentile

Low risk: more likely to be exploited than 31% of all known CVEs.

References

Patch2

Third-Party Advisory4

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.