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Vulnerability CVE-2023-34321
Published: 2024-01-05
| Description: |
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.
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References: |
https://xenbits.xenproject.org/xsa/advisory-437.html
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