CVE-2026-23557
Description
A flaw was found in xenstored, a component of Xen. Any guest operating system can cause xenstored to crash by issuing an XS_RESET_WATCHES command within a transaction, leading to a denial of service (DoS). This occurs due to an assertion (assert()) triggering, which can halt the xenstored process.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker that can trigger an assert statement can still lead to a denial of service if the relevant code can be triggered by an attacker, and if the scope of the assert() extends beyond the attacker's own session.
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