CVE-2026-31670

MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net: rfkill: prevent unlimited numbers of rfkill events from being created Userspace can create an unlimited number of rfkill events if the system is so configured, while not consuming them from the rfkill file descriptor, causing a potential out of memory situation. Prevent this from bounding the number of pending rfkill events at a "large" number (i.e. 1000) to prevent abuses like this.

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: 4/24/2026Modified: 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/4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4Patchhttps://git.kernel.org/stable/c/673d2a3eef6e0ee9736501a150c9e4024a4e60a6Patchhttps://git.kernel.org/stable/c/80ce4cb026f0a4c4532b6cad827b44debda6256aPatchhttps://git.kernel.org/stable/c/82843afc19012a29ba863961ef494165aa1a88f4Patchhttps://git.kernel.org/stable/c/a8c26800e0220e1550af012f5a20e50f5c78864dPatchhttps://git.kernel.org/stable/c/b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5caPatchhttps://git.kernel.org/stable/c/e3842779547c83150569071d9980517cc9029fc0Patchhttps://git.kernel.org/stable/c/ea245d78dec594372e27d8c79616baf49e98a4a1Patchhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html