CVE-2026-52909 (GCVE-0-2026-52909)

Vulnerability from cvelistv5 – Published: 2026-06-19 14:43 – Updated: 2026-10-19 19:36
VLAI
Title
ip6_vti: set netns_immutable on the fallback device.
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:22 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6638 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < 12acc977838c943636fb01e2f3087d2e4cc3b7cc (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < 7f28e3948c59481f8db9c9638e204258d26b4e41 (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < 12c65e2c7fef507551bd7b52123598a761662c01 (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < f4b6b4af7ef0661ac153c6f7eb1030aa8482c1a3 (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < c5dbd669db5a426b3025512322e1bf2cdbe14305 (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < ecf8904067dcba0dad86ece80874841e60317885 (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < dcdce3bc9f08026ff3739ee7339e1bef526fc5f3 (git)
Affected: 61220ab349485d911083d0b7990ccd3db6c63297 , < d289d5307762d1838aaece22c6b6fcad9e8865f9 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 5.10.260 , ≤ 5.10.* (semver)
Unaffected: 5.15.211 , ≤ 5.15.* (semver)
Unaffected: 6.1.177 , ≤ 6.1.* (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

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