vulnerability

Alpine Linux: CVE-2023-46837: Improper Restriction of Operations within the Bounds of a Memory Buffer

Severity
2
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:N)
Published
Jan 5, 2024
Added
Aug 22, 2024
Modified
Oct 2, 2024

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.

This undefined behavior was meant to be addressed by XSA-437, but the
approach was not sufficient.

Solution

alpine-linux-upgrade-xen
Title
NEW

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