CVE-2026-72136
Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink xfrmi_changelink() operates on at most two netns, dev_net(dev) and the interface link netns xi->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 xi->net can rewrite an interface that lives in xi->net. Gate xfrmi_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
How to fix
- Linux Linux04c1aa57d08471b1953bf27c84ac9b3d78d71831, bdfd1c21d90e628a58a9de79e024cdfcbedfa15c, 80ec68bba11f7f387c0e4099c2d7b2c84943eb99, e9c90756f10da334fb31552e52c61f1dba69f491, 37b61946d278c7deb0d40ba8f2b6fc0478d61dab, 8ca2a19a987a7d1cb4c916ed9723a1c6993b4276, 3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea, 095515d89b19b6cc19dfcdc846f97403ed1ebce3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | f203b76d78092faf248db3f851840fbecf80b40e ≤ v < 04c1aa57d08471b1953bf27c84ac9b3d78d71831, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < bdfd1c21d90e628a58a9de79e024cdfcbedfa15c, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < 80ec68bba11f7f387c0e4099c2d7b2c84943eb99, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < e9c90756f10da334fb31552e52c61f1dba69f491, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < 37b61946d278c7deb0d40ba8f2b6fc0478d61dab, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < 8ca2a19a987a7d1cb4c916ed9723a1c6993b4276, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < 3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea, f203b76d78092faf248db3f851840fbecf80b40e ≤ v < 095515d89b19b6cc19dfcdc846f97403ed1ebce3, 4.19 | 04c1aa57d08471b1953bf27c84ac9b3d78d71831, bdfd1c21d90e628a58a9de79e024cdfcbedfa15c, 80ec68bba11f7f387c0e4099c2d7b2c84943eb99, e9c90756f10da334fb31552e52c61f1dba69f491, 37b61946d278c7deb0d40ba8f2b6fc0478d61dab, 8ca2a19a987a7d1cb4c916ed9723a1c6993b4276, 3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea, 095515d89b19b6cc19dfcdc846f97403ed1ebce3 |
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