CVE-2026-31496

MEDIUM

netfilter: nf_conntrack_expect: skip expectations in other netns via proc

Title source: cna

Description

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").

References (6)

Core 6

Core 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

Scores

CVSS v3 5.5

EPSS 0.0001

EPSS Percentile 3.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published

Products (17)

Linux/Linux < 2.6.28

Linux/Linux 2.6.28

Linux/Linux 6.1.168 - 6.1.*

Linux/Linux 6.12.80 - 6.12.*

Linux/Linux 6.18.21 - 6.18.*

Linux/Linux 6.19.11 - 6.19.*

Linux/Linux 6.6.131 - 6.6.*

Linux/Linux 7.0

Linux/Linux 9b03f38d0487f3908696242286d934c9b38f9d2a - 168145c87444619e3e649322bbe7719ecd00d411

Linux/Linux 9b03f38d0487f3908696242286d934c9b38f9d2a - 2028405ea6987b4448784e439413202cfe19f43f

... and 7 more

Published Apr 22, 2026

Tracked Since Apr 22, 2026