Vulnerability Description
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.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/68d27250c9e81ab7764603e346c2b1017cb53adf
- https://git.kernel.org/stable/c/cfa7e2734877330d6c10e0f33953905486c4530c
- https://git.kernel.org/stable/c/db3dbdfea1b8f38774419c5c2c14e4b81c48708d
- https://git.kernel.org/stable/c/de8ccbd6bf4efe7a059e2c483789936009e10f42
FAQ
What is CVE-2026-80723?
CVE-2026-80723 is a vulnerability with a CVSS score of 8.4 (HIGH). 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-pl...
How severe is CVE-2026-80723?
CVE-2026-80723 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-80723?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.