CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.1. See the original NVD description below for full technical details.
CVE
CVE-2026-23555
Severity
HIGH
CVSS
7.1
EPSS
0.18%
Original NVD Description
Any guest issuing a Xenstore command accessing a node using the (illegal) node path "/local/domain/", will crash xenstored due to a clobbered error indicator in xenstored when verifying the node path. Note that the crash is forced via a failing assert() statement in xenstored. In case xenstored is being built with NDEBUG #defined, an unprivileged guest trying to access the node path "/local/domain/" will result in it no longer being serviced by xenstored, other guests (including dom0) will still be serviced, but xenstored will use up all cpu time it can get.
Related CVEs
Other vulnerabilities affecting the same vendor(s)