CVE-2023-46837

CVE-2023-46837 · arm32: The cache may not be properly cleaned/invalidated (take two)

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.

CVSS 3.3 · Faible · EPSS 0,2% · Correctif disponible

Publication

2024-01-05T16:36:10.881Z

Mise à jour

2025-11-04T18:18:50.284Z

Pile logicielle: system

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