CVE-2026-52909: ip6_vti: set netns_immutable on the fallback device.

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-29

EPSS Score

0.12% (percentile: 2.0%)

Affected Products (1)

Other

• 21474-17084

Revision History

• 2026-06-29: Information published.