CVE-2016-7154

Severity: medium (CVSS 6.7 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-09-21 · updated 2026-06-17
Weakness: CWE-416

Description

Use-after-free vulnerability in the FIFO event channel code in Xen 4.4.x allows local guest OS administrators to cause a denial of service (host crash) and possibly execute arbitrary code or obtain sensitive information via an invalid guest frame number.

Affected products

xen: 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.4.4

References

http://support.citrix.com/article/CTX216071
http://www.c7zero.info/stuff/csw2017_ExploringYourSystemDeeper_updated.pdf
http://www.debian.org/security/2016/dsa-3663
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/92863
http://www.securitytracker.com/id/1036754
http://xenbits.xen.org/xsa/advisory-188.html
http://xenbits.xen.org/xsa/xsa188.patch
http://support.citrix.com/article/CTX216071
http://www.c7zero.info/stuff/csw2017_ExploringYourSystemDeeper_updated.pdf
http://www.debian.org/security/2016/dsa-3663
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

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