---
cve: "CVE-2026-80723"
severity: "LOW"
cvss: 3.1
epss: "5.8%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-28 08:16:58"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T03:50:29+02:00"
---

# CVE-2026-80723

> 3.1 LOW

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

of: reserved_mem: prevent OOB when too many dynamic regions are defined

On boot, fdt_scan_reserved_mem() saves each dynamically-placed
/reserved-memory subnode into a local array of size
MAX_RESERVED_REGIONS.

If the device tree defines more than MAX_RESERVED_REGIONS
dynamically-placed regions, fdt_scan_reserved_mem() writes past the
end of the local array.

Add a bounds check that logs an error and skips the excess regions,
restoring the original behavior.

## Patch verfügbar (OSV)

- Kernel ≥ 6.12.103
- Kernel ≥ 6.18.44

## Referenzen

- <https://git.kernel.org/stable/c/68d27250c9e81ab7764603e346c2b1017cb53adf>
- <https://git.kernel.org/stable/c/cfa7e2734877330d6c10e0f33953905486c4530c>
- <https://git.kernel.org/stable/c/de8ccbd6bf4efe7a059e2c483789936009e10f42>
- <https://git.kernel.org/stable/c/db3dbdfea1b8f38774419c5c2c14e4b81c48708d>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-80723) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_