CVE-2026-72055net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink vti6_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 vti6_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 61220ab349485d911083d0b7990ccd3db6c63297 before f5254e7766b4ac02b66b2ccef896cd278503cb11; from 61220ab349485d911083d0b7990ccd3db6c63297 before ef897249dc957089e6f7f11ceea699e093ad51bd; from 61220ab349485d911083d0b7990ccd3db6c63297 before f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba; from 61220ab349485d911083d0b7990ccd3db6c63297 before c64b9ae7eb97e81d54b792910a3aeafd92566c79; from 61220ab349485d911083d0b7990ccd3db6c63297 before b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf; 61220ab349485d911083d0b7990ccd3db6c63297 builds before 0b2f9c908f930ec4be17d389723f9a202d6a883c; from 61220ab349485d911083d0b7990ccd3db6c63297 before f97e93ebf2f9b8ef3b87f7a9371255e84d151587; from 61220ab349485d911083d0b7990ccd3db6c63297 before e2ac3b242c37dff323a964962e43854f4b1a2b79 | CNA record |
References
- https://git.kernel.org/stable/c/f5254e7766b4ac02b66b2ccef896cd278503cb11
- https://git.kernel.org/stable/c/ef897249dc957089e6f7f11ceea699e093ad51bd
- https://git.kernel.org/stable/c/f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba
- https://git.kernel.org/stable/c/c64b9ae7eb97e81d54b792910a3aeafd92566c79
- https://git.kernel.org/stable/c/b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf
- https://git.kernel.org/stable/c/0b2f9c908f930ec4be17d389723f9a202d6a883c
- https://git.kernel.org/stable/c/f97e93ebf2f9b8ef3b87f7a9371255e84d151587
- https://git.kernel.org/stable/c/e2ac3b242c37dff323a964962e43854f4b1a2b79
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.