Answer in brief
CVE-2026-68161 records a Unknown severity vulnerability in sctp: close UDP tunnel sockets during netns teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=046c052b475e7119b6a30e3483e2888fc606a2f8 <c6eb2d615210b80339548ab07c0230edaab9a6c7 || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <8ff78591d309c50a4fdab683b68dd8d512a270dd || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <3bf0e349cbb4f975f35eb22753acc346b89c66a0 || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <37ff9794be48d0caa37687e04d09675f9c849121 || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <ffb2bd7ade36ec4da32c46a6eddbf4515316d08c | c6eb2d615210b80339548ab07c0230edaab9a6c7, 8ff78591d309c50a4fdab683b68dd8d512a270dd, 3bf0e349cbb4f975f35eb22753acc346b89c66a0, 37ff9794be48d0caa37687e04d09675f9c849121, ffb2bd7ade36ec4da32c46a6eddbf4515316d08c |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68161 records a Unknown severity vulnerability in sctp: close UDP tunnel sockets during netns teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=046c052b475e7119b6a30e3483e2888fc606a2f8 <c6eb2d615210b80339548ab07c0230edaab9a6c7 || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <8ff78591d309c50a4fdab683b68dd8d512a270dd || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <3bf0e349cbb4f975f35eb22753acc346b89c66a0 || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <37ff9794be48d0caa37687e04d09675f9c849121 || >=046c052b475e7119b6a30e3483e2888fc606a2f8 <ffb2bd7ade36ec4da32c46a6eddbf4515316d08c | c6eb2d615210b80339548ab07c0230edaab9a6c7, 8ff78591d309c50a4fdab683b68dd8d512a270dd, 3bf0e349cbb4f975f35eb22753acc346b89c66a0, 37ff9794be48d0caa37687e04d09675f9c849121, ffb2bd7ade36ec4da32c46a6eddbf4515316d08c |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.