CVE-2026-79607

During Xenstore live update the state record for a Xenstore watch with specified watch depth is written with two bytes missing. This results in an inconsistent state when reading the state back in the new Xenstore, causing a crash of Xenstore or wrong Xenstore data.

Score

CVSS 3.1 5.5 Medium

Status

Awaiting Analysis - security@xen.org

Published

2026-10-13

Last modified

2026-10-16

Weaknesses

CWE-119

Affected products

• Xen (Xen)

References

• https://xenbits.xenproject.org/xsa/advisory-514.html
• http://xenbits.xen.org/xsa/advisory-514.html
• http://www.openwall.com/lists/oss-security/2026/10/13/3