CVE-2026-72053
net: ipip: require CAP_NET_ADMIN in the device netns for changelink
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: net: ipip: require CAP_NET_ADMIN in the device netns for changelink ipip_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 ipip_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
6c742e714d8c282fd8f8b22d3e20b5141738c1ee < 91571643e554ae89a91942380d5f5361fb7060a2 6c742e714d8c282fd8f8b22d3e20b5141738c1ee < 983cc4aa7e6f633b34c3ee743771252d7afa9a90 6c742e714d8c282fd8f8b22d3e20b5141738c1ee < 26544021d5c49cc6ae8a968ccb5033e6363854a4 6c742e714d8c282fd8f8b22d3e20b5141738c1ee < 68cadc3698c7de88966d306d12ec9c6217da228a 6c742e714d8c282fd8f8b22d3e20b5141738c1ee < d49edcc65e0a37cc9b386a94415c5d6670ca8b71 6c742e714d8c282fd8f8b22d3e20b5141738c1ee < 8211a26324667980a463c069469a818e71207e02
Linux / Linux
3.12
References
git.kernel.org: https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2 git.kernel.org: https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90 git.kernel.org: https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4 git.kernel.org: https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a git.kernel.org: https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71 git.kernel.org: https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02