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CVE-2022-33747

Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g.

Impact

Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.

Affected products

VendorProductAffected versions
XenXen
All versions
FedoraprojectFedora
Versions 35, 36, 37
DebianDebian Linux
Version 11.0

Weakness classification

CWE-404

References