PT-2026-34401 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-31496

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the netfilter component, specifically within nf conntrack expect, where expectations residing in other network namespaces (netns) were not properly skipped when accessed via proc. This could allow the dumping of expectations from different network namespaces.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-31496

ECHO-AA22-7486-9A48

Affected Products

Linux Kernel

References · 16

• https://security-tracker.debian.org/tracker/CVE-2026-31496 · Vendor Advisory
• https://git.kernel.org/stable/c/2028405ea6987b4448784e439413202cfe19f43f · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31496 · Vendor Advisory
• https://git.kernel.org/stable/c/9ca8c7452493d915f9bbf2f39331e6c583d07a23 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31496 · Security Note
• https://git.kernel.org/stable/c/dcfcd95b3ae7683e8ae55c92284b3430ce614bc7 · Patch
• https://git.kernel.org/stable/c/3db5647984de03d9cae0dcddb509b058351f0ee4 · Patch
• https://git.kernel.org/stable/c/168145c87444619e3e649322bbe7719ecd00d411 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31496 · Security Note
• https://git.kernel.org/stable/c/3265ad619987cb551edaf797ed056d80ac450225 · Patch
• https://ubuntu.com/security/CVE-2026-31496 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-31496 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31496 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-31496 · Note
• https://git.kernel.org/linus/3db5647984de03d9cae0dcddb509b058351f0ee4 · Note