Use After Free in Xen

CVE-2016-7154

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.

Vulnerability class: Use-After-Free

EPSS: 0.005 (40.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Xen — versions 4.4.0, 4.4.1, 4.4.2
  • N/a — versions n/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-7154?
CVE-2016-7154 is a medium-severity vulnerability in Xen, classified under Use After Free. CVSS score: 6.7/10. Published 2016-09-21.
How severe is CVE-2016-7154?
Medium severity. CVSS v3 base score is 6.7 out of 10.