CVE-2026-52909 (GCVE-0-2026-52909)
Vulnerability from cvelistv5
Published
2026-06-19 14:43
Modified
2026-10-19 19:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ip6_vti: set netns_immutable on the fallback device. john1988 and Noam Rathaus reported that vti6_init_net() does not set the netns_immutable flag on the per-netns fallback tunnel device (ip6_vti0). Other similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel) correctly set this flag during their fallback device initialization to prevent them from being moved to another network namespace.
References
Impacted products
Vendor Product Version
Linux Linux Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
Version: 61220ab349485d911083d0b7990ccd3db6c63297
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      "dataVersion": "5.2"
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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.