Xen PoD Guest Reclaimer Causes Memory Management Corruption
CVE-2026-62434 Published on July 28, 2026
PoD: Don't try to reclaim special pages
A guest started with Populated on Demand enabled (PoD) can attempt to
reclaim pages which aren't regular guest RAM. This can cause corruption
of memory management state in Xen.
Vulnerability Analysis
CVE-2026-62434 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-62434 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-62434
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