CVE-2026-23554
Description
A flaw was found in Xen. An optimization in the Intel Extended Page Table (EPT) paging code, used by Xen, defers flushing cached EPT state. However, the freeing of paging structures is not similarly deferred. This can result in freed memory pages remaining in the cached state, allowing stale entries to point to memory regions not intended for guest access. A malicious guest could potentially exploit this to access unintended memory regions, leading to information disclosure or privilege escalation.
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.
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