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.
Affected products
xen: xen
References3
- xenbits.xenproject.org/xsa/advisory-484.html PatchVendor Advisory
- xenbits.xen.org/xsa/advisory-484.html PatchVendor Advisory
- www.openwall.com/lists/oss-security/2026/04/28/11 Mailing ListPatchThird Party Advisory
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 14 November 2026
- CWE
- CWE-617
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