CVE-2026-72051 (GCVE-0-2026-72051)
Vulnerability from cvelistv5
Published
2026-08-15 05:52
Modified
2026-10-19 21:19
Severity ?
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink ip6_tnl_changelink() operates on at most two netns, dev_net(dev) and the tunnel link netns t->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in t->net can rewrite a tunnel that lives in t->net. Gate ip6_tnl_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
Version: 0bd8762824e73a3cce7b7560a97463301764b616
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    }
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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.