CVE-2026-23557

Any guest can cause xenstored to crash by issuing a XSRESETWATCHES 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 xenstore...

CVE-2026-23557 Xenstored DoS via XS_RESET_WATCHES command

Any guest can cause xenstored to crash by issuing a XSRESETWATCHES 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 xenstore...

CVE-2020-29485

An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...

CVE-2020-29485

CVE-2020-29485 concerns Xen 4.6–4.14.x where, on XS_RESET_WATCHES, Xenstored’s tracking information is not fully freed in the Ocaml Xenstored implementation, allowing unbounded memory growth and a system-wide DoS. The vulnerability affects hosts using the Ocaml Xenstored; the C Xenstored implemen...