CVE-2026-23557

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

https://xenbits.xenproject.org/xsa/advisory-484.html

http://xenbits.xen.org/xsa/advisory-484.html

http://www.openwall.com/lists/oss-security/2026/04/28/11

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS