CVE-2026-80723

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-80723

Key Details

CVE	CVE-2026-80723
CVSS Score / Version	8.4 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-80723
CVE	https://www.cve.org/CVERecord?id=CVE-2026-80723

Source

Reference

NVD

CVE