CVE-2023-34321

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.

• CWE-119
• CWE-119

• https://xenbits.xenproject.org/xsa/advisory-437.htmlPatch, Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-437.html
• https://xenbits.xenproject.org/xsa/advisory-437.htmlPatch, Vendor Advisory

Published

Jan 5, 2024

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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