A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
| Link | Tags |
|---|---|
| https://arxiv.org/abs/2111.08553 | third party advisory |
| https://arxiv.org/pdf/2111.08553.pdf | third party advisory technical description |
| https://bugzilla.redhat.com/show_bug.cgi?id=1931327 | issue tracking third party advisory |
| https://access.redhat.com/security/cve/CVE-2021-3714 | third party advisory |