CVE-2026-72136xfrm: xfrm_interface: 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: 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.
- 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 f203b76d78092faf248db3f851840fbecf80b40e before 04c1aa57d08471b1953bf27c84ac9b3d78d71831; from f203b76d78092faf248db3f851840fbecf80b40e before bdfd1c21d90e628a58a9de79e024cdfcbedfa15c; from f203b76d78092faf248db3f851840fbecf80b40e before 80ec68bba11f7f387c0e4099c2d7b2c84943eb99; from f203b76d78092faf248db3f851840fbecf80b40e before e9c90756f10da334fb31552e52c61f1dba69f491; from f203b76d78092faf248db3f851840fbecf80b40e before 37b61946d278c7deb0d40ba8f2b6fc0478d61dab; from f203b76d78092faf248db3f851840fbecf80b40e before 8ca2a19a987a7d1cb4c916ed9723a1c6993b4276; from f203b76d78092faf248db3f851840fbecf80b40e before 3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea; from f203b76d78092faf248db3f851840fbecf80b40e before 095515d89b19b6cc19dfcdc846f97403ed1ebce3 | CNA record |
References
- https://git.kernel.org/stable/c/04c1aa57d08471b1953bf27c84ac9b3d78d71831
- https://git.kernel.org/stable/c/bdfd1c21d90e628a58a9de79e024cdfcbedfa15c
- https://git.kernel.org/stable/c/80ec68bba11f7f387c0e4099c2d7b2c84943eb99
- https://git.kernel.org/stable/c/e9c90756f10da334fb31552e52c61f1dba69f491
- https://git.kernel.org/stable/c/37b61946d278c7deb0d40ba8f2b6fc0478d61dab
- https://git.kernel.org/stable/c/8ca2a19a987a7d1cb4c916ed9723a1c6993b4276
- https://git.kernel.org/stable/c/3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea
- https://git.kernel.org/stable/c/095515d89b19b6cc19dfcdc846f97403ed1ebce3
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.