CVE-2026-80723of: reserved_mem: prevent OOB when too many dynamic regions are defined
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9a0fe62f93ede02c27aaca81112af1e59c8c0979 before 68d27250c9e81ab7764603e346c2b1017cb53adf; from 8a6e02d0c00e7b62e6acb74146878bb91e9e7e31 before cfa7e2734877330d6c10e0f33953905486c4530c; from 8a6e02d0c00e7b62e6acb74146878bb91e9e7e31 before de8ccbd6bf4efe7a059e2c483789936009e10f42; from 8a6e02d0c00e7b62e6acb74146878bb91e9e7e31 before db3dbdfea1b8f38774419c5c2c14e4b81c48708d; from 6.12.13 before 6.12.103 | CNA record |
References
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.