xen: Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g
CVE-2022-33747 is fixed in xen on 1 platform, first by DEBIAN-CVE-2022-33747, released October 11, 2022. It is not reported as exploited. Patch Radar priority: Routine.
Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xen · Debian 12.15 (bookworm) | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-33747 | Oct 11, 2022 |
| xen · Debian 13.5 (trixie) | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-33747 | Oct 11, 2022 |
| xen · Debian 14 | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-33747 | Oct 11, 2022 |
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