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Debian: CVE-2023-34321: xen -- security update

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Debian: CVE-2023-34321: xen -- security update

Severity
2
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:N)
Published
01/05/2024
Created
07/31/2024
Added
07/30/2024
Modified
01/28/2025

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.

Solution(s)

  • debian-upgrade-xen

References

  • https://attackerkb.com/topics/cve-2023-34321
  • CVE - 2023-34321
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  • 最后回复

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