Riskcovery

CVE-2026-72136

xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink

State
Published
Severity
8.8 High
Published
Aug 15, 2026
Updated
Oct 16, 2026
Reserved
Aug 9, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • f203b76d78092faf248db3f851840fbecf80b40e to before 04c1aa57d08471b1953bf27c84ac9b3d78d71831Affected
  • f203b76d78092faf248db3f851840fbecf80b40e to before bdfd1c21d90e628a58a9de79e024cdfcbedfa15cAffected
  • f203b76d78092faf248db3f851840fbecf80b40e to before 80ec68bba11f7f387c0e4099c2d7b2c84943eb99Affected
  • f203b76d78092faf248db3f851840fbecf80b40e to before e9c90756f10da334fb31552e52c61f1dba69f491Affected
  • f203b76d78092faf248db3f851840fbecf80b40e to before 37b61946d278c7deb0d40ba8f2b6fc0478d61dabAffected
  • f203b76d78092faf248db3f851840fbecf80b40e to before 8ca2a19a987a7d1cb4c916ed9723a1c6993b4276Affected
  • f203b76d78092faf248db3f851840fbecf80b40e to before 3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928eaAffected
  • f203b76d78092faf248db3f851840fbecf80b40e to before 095515d89b19b6cc19dfcdc846f97403ed1ebce3Affected
LinuxLinux
  • 4.19Affected
  • before 4.19Not affected
  • 5.10.261 through 5.10.*Not affected
  • 5.15.212 through 5.15.*Not affected
  • 6.1.178 through 6.1.*Not affected
  • 6.6.145 through 6.6.*Not affected
  • 6.12.97 through 6.12.*Not affected
  • 6.18.40 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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