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CVE-2026-68161

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: sctp: close UDP tunnel sockets during netns teardown proc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when net…

Published Aug 10, 2026EPSS 0.66%

Overview

CVE-2026-68161 is a critical-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

sctp: close UDP tunnel sockets during netns teardown

proc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when

net.sctp.udp_port is set, and stops/restarts them when the sysctl value

changes. The netns exit path does not stop these sockets, so a namespace

can be torn down while its SCTP UDP tunnel sockets are still installed.

Close the UDP tunnel sockets from sctp_ctrlsock_exit() after unregistering

the per-net sysctl table. This prevents new sysctl writes from racing in

while the sockets are being released, and closes the sockets before the

control socket is destroyed.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/37ff9794be48d0caa37687e04d09675f9c849121Refgit.kernel.org/stable/c/3bf0e349cbb4f975f35eb22753acc346b89c66a0Refgit.kernel.org/stable/c/8ff78591d309c50a4fdab683b68dd8d512a270ddRefgit.kernel.org/stable/c/c6eb2d615210b80339548ab07c0230edaab9a6c7Refgit.kernel.org/stable/c/ffb2bd7ade36ec4da32c46a6eddbf4515316d08c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68161?

CVE-2026-68161 is a critical-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-68161?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-68161?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-68161?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68161 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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