CVEvulnerability
CVE-2026-23555
7.1 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-03-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-617
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.
Affected configurations
• xen xen (>= 4.18.0)
Related
Weakness · CWE (1)
- CWE-617 Reachable Assertion weakness
References
- https://xenbits.xenproject.org/xsa/advisory-481.html Patch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/03/17/7 Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-481.html Patch, Vendor Advisory