Description
Any guest can cause xenstored to crash by issuing a XS_RESET_WATCHES command within a transaction due to an assert() triggering. In case xenstored was built with NDEBUG #defined nothing bad will happen, as assert() is doing nothing in this case. Note that the default is not to define NDEBUG for xenstored builds even in release builds of Xen.
References (3)
Core 3
Core References
Various Sources
http://xenbits.xen.org/xsa/advisory-484.html
Scores
CVSS v3
6.5
EPSS
0.0001
EPSS Percentile
1.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-617
Status
published
Products (2)
xen/xen
4.2.0
Xen/Xen
consult Xen advisory XSA-484
Published
May 19, 2026
Tracked Since
May 19, 2026