CVE-2026-72052
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
ip6gre_changelink() and ip6erspan_changelink() operate 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 both ops on rtnl_dev_link_net_capable() at their top, before any attribute is parsed.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < 129f8939e5af683cec3a1a5edcb40a64636ad81e | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < e3724dedf57761c6de52f4d604ec74f66fd61611 | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < 220162c9fedbe992da70d70f50a10da4f45f914c | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < 1d4d8ee002083ca4ead5353662bf8362428af57f | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < 0caa9f348f8b5356900de77b0bb89a697c4aff20 | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < 03d8843b143ebbbfaf48511922abc6e886575a61 | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < c38c8b0db3c65b597e7ece317b6cb59de3d15e69 | affected |
| Linux | Linux | 690afc165bb314354667f67157c1a1aea7dc797a < f00a50876d2818bd6dc86fa98b3ef360884c53c8 | affected |
| Linux | Linux | d0201d2405dac8d9b16773e97709925e397552d0 | affected |
| Linux | Linux | 7943bb0f06365cf5e32f3cf8a6b29eeae981fb8a | affected |
| Linux | Linux | 4.19.100 < 4.20 | affected |
| Linux | Linux | 5.4.16 < 5.5 | affected |
| Linux | Linux | 5.5 | affected |
| Linux | Linux | 0 < 5.5 | unaffected |
| Linux | Linux | 5.10.261 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.212 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.97 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/129f8939e5af683cec3a1a5edcb40a64636ad81e
- https://git.kernel.org/stable/c/e3724dedf57761c6de52f4d604ec74f66fd61611
- https://git.kernel.org/stable/c/220162c9fedbe992da70d70f50a10da4f45f914c
- https://git.kernel.org/stable/c/1d4d8ee002083ca4ead5353662bf8362428af57f
- https://git.kernel.org/stable/c/0caa9f348f8b5356900de77b0bb89a697c4aff20
- https://git.kernel.org/stable/c/03d8843b143ebbbfaf48511922abc6e886575a61
- https://git.kernel.org/stable/c/c38c8b0db3c65b597e7ece317b6cb59de3d15e69
- https://git.kernel.org/stable/c/f00a50876d2818bd6dc86fa98b3ef360884c53c8
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