# CVE-2024-45819: xen: PVH guests have their ACPI tables constructed by the toolstack

CVE-2024-45819 is fixed in xen on 1 platform, first by SUSE-SU-2024:4163-1, released December 4, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-45819
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0030
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 4, 2024

## Description

PVH guests have their ACPI tables constructed by the toolstack.  The construction involves building the tables in local memory, which are then copied into guest memory.  While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | xen Debian 12.15 (bookworm) | 4.17.5+23-ga4e5191dc0-1 | [DEBIAN-CVE-2024-45819](https://patchblox.com/security/data/fix/linux/debian-cve-2024-45819.md) | Dec 19, 2024 |
| Linux | xen Debian 13.5 (trixie) | 4.19.1-1 | [DEBIAN-CVE-2024-45819](https://patchblox.com/security/data/fix/linux/debian-cve-2024-45819.md) | Dec 19, 2024 |
| Linux | xen Debian 14 | 4.19.1-1 | [DEBIAN-CVE-2024-45819](https://patchblox.com/security/data/fix/linux/debian-cve-2024-45819.md) | Dec 19, 2024 |
| Linux | xen opensuse-leap 15.6 | 4.18.3_06-150600.3.12.1 | [SUSE-SU-2024:4163-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-4163-1.md) | Dec 4, 2024 |
| Linux | xen sles 15.6 | 4.18.3_06-150600.3.12.1 | [SUSE-SU-2024:4163-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-4163-1.md) | Dec 4, 2024 |

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