low3.3
CVE-2023-34321
Arm provides multiple helpers to clean & invalidate the cache for a given region.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Xen | Xen | through 4.16 |