CVE-2026-31496

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").

Score

CVSS 3.1 5.5 Medium

Status

Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-04-22

Last modified

2026-10-15

Affected products

• Linux Kernel (Linux)
• Simatic S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)
• Simatic S7-1500 Cpu 1518f-4 Pndp Mfp (Siemens)
• Siplus S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)

References

• https://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43f
• https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411
• https://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7
• https://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23
• https://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225
• https://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-457936.html