Input validation error in Xen - CVE-2016-9385
Published: January 23, 2017 / Updated: July 28, 2020
Vulnerability identifier: #VU32218
CSH Severity: Low
CVSS v4: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H]
CVE-ID: CVE-2016-9385
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to a crash the entire system.
The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows local x86 PV guest OS administrators to cause a denial of service (host crash) by leveraging lack of canonical address checks.
Affected software
Xen
xen (Alpine package)
xen
Fedora
xen (Alpine package)
xen
Fedora
How to mitigate CVE-2016-9385
Install update from vendor's website.
xen (Alpine package) - update to 4.5.3-r2
xen - addressed in versions 4.5.5-4.fc23, 4.6.4-2.fc24, 4.7.1-3.fc25
xen - addressed in versions 4.5.5-4.fc23, 4.6.4-2.fc24, 4.7.1-3.fc25