CVE-2026-68161

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/37ff9794be48d0caa37687e04d09675f9c849121
https://git.kernel.org/stable/c/3bf0e349cbb4f975f35eb22753acc346b89c66a0
https://git.kernel.org/stable/c/8ff78591d309c50a4fdab683b68dd8d512a270dd
https://git.kernel.org/stable/c/c6eb2d615210b80339548ab07c0230edaab9a6c7
https://git.kernel.org/stable/c/ffb2bd7ade36ec4da32c46a6eddbf4515316d08c

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 13:20

Updated : 2026-08-17 05:18

NVD link : CVE-2026-68161

Mitre link : CVE-2026-68161

CVE.ORG link : CVE-2026-68161

JSON object : View

Products Affected

No product.

CWE

No CWE.

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