CVE-2026-31752

MEDIUM

In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: validate ND option lengths br_nd_send() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option payload. Validate option lengths against the remaining NS option area before advancing, and only read source LLADDR when the option is large enough for an Ethernet address.

CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 5/1/2026Modified: 7/14/2026

Related Intelligence (1)

CRITICALAi

Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-209-04.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.6 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fix versions and recommend

CVE-2021-41617CVE-2023-28531
CISA Advisories

References (10)

https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725bPatchhttps://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2Patchhttps://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85Patchhttps://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299bPatchhttps://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7cPatchhttps://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aaPatchhttps://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7Patchhttps://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43aPatchhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html