CVE-2026-31496

MEDIUM

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_expect: skip expectations in other netns via proc Skip expectations that do not reside in this netns. Similar to e77e6ff502ea ("netfilter: conntrack: do not dump other netns's conntrack entries via proc").

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: 4/22/2026Modified: 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 (8)

https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411Patchhttps://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43fPatchhttps://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225Patchhttps://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4Patchhttps://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23Patchhttps://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7Patchhttps://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html