CVE & CISA-KEV Catalog

CVE-2016-4439

MEDIUM
6.7
CVSS v3
NVD

Description

The esp_reg_write function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check command buffer length, which allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the QEMU host via unspecified vectors.

CWE-119Buffer Overflow

How to fix

Remediation Available
qemuDebian
Fixed in:1:2.6+dfsg-2CVE-2016-4439
Fixed in:1:2.6+dfsg-2CVE-2016-4439
Fixed in:1:2.6+dfsg-2CVE-2016-4439
Fixed in:1:2.6+dfsg-2CVE-2016-4439
qemuUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-systemUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-aarch64Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-armUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-mipsUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-miscUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-ppcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-s390xUbuntu
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-sparcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1
qemu-system-x86Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.26USN-3047-1
Fixed in:1:2.5+dfsg-5ubuntu10.3USN-3047-1

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
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.46%probability of exploitation in 30 days
37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-4966Critical9.4100%KEV + RansomFix
CVE-2017-11882High7.8100%KEV + Ransom-
CVE-2020-0796Critical10.0100%KEV + Ransom-
CVE-2008-4250Critical9.899%KEV-
CVE-2017-15944Critical9.898%KEVFix
CVE-2015-0014High10.097%--
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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.