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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-68161

sctp: close UDP tunnel sockets during netns teardown

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 046c052b475e7119b6a30e3483e2888fc606a2f8 to < c29affd44e6769e3073235d4b471d9b501fa8166affected
  • 046c052b475e7119b6a30e3483e2888fc606a2f8 to < c6eb2d615210b80339548ab07c0230edaab9a6c7affected
  • 046c052b475e7119b6a30e3483e2888fc606a2f8 to < 8ff78591d309c50a4fdab683b68dd8d512a270ddaffected
  • 046c052b475e7119b6a30e3483e2888fc606a2f8 to < 3bf0e349cbb4f975f35eb22753acc346b89c66a0affected
  • 046c052b475e7119b6a30e3483e2888fc606a2f8 to < 37ff9794be48d0caa37687e04d09675f9c849121affected
  • 046c052b475e7119b6a30e3483e2888fc606a2f8 to < ffb2bd7ade36ec4da32c46a6eddbf4515316d08caffected

Linux Linux

Default version status: affected

  • 5.11affected
  • 0 to < 5.11unaffected
  • 6.1.189 to ≤ 6.1.*unaffected
  • 6.6.151 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.42 to ≤ 6.18.*unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References