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vulnerabilities
Xen Security Advisory 512 v3 (CVE-2026-79604) - oxenstored: Unbounded accumulation of watches
Xen released Security Advisory 512 (CVE-2026-79604) documenting an unbounded accumulation of watches vulnerability in oxenstored. The issue involves two data structures (a global trie and per-domain hashtable) that fail to clear watches properly during xenbus reconnection events.
Why it matters: Xen hypervisor administrators and organizations running Xen-based infrastructure need to evaluate whether this vulnerability affects their deployments and plan patching accordingly, as unbounded watch accumulation could lead to resource exhaustion or denial of service.
- Source published
- First seen by Cybersecurity Tracker