Vulnerability details
CVE-2026-72053
Linux Linux
net: ipip: require CAP_NET_ADMIN in the device netns for changelink
CVSS 3.1
8.8High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 3.12 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < 068ad9b85f681755f751ebab82ae98146cec163d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < 91571643e554ae89a91942380d5f5361fb7060a2 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < 983cc4aa7e6f633b34c3ee743771252d7afa9a90 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < a7d2642a50282322bc33f34ee7305f2b793df494 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < 68cadc3698c7de88966d306d12ec9c6217da228a | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < d49edcc65e0a37cc9b386a94415c5d6670ca8b71 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < 8211a26324667980a463c069469a818e71207e02 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6c742e714d8c282fd8f8b22d3e20b5141738c1ee ≤ v < 26544021d5c49cc6ae8a968ccb5033e6363854a4 | CVEProject cvelistV5 (CNA) |
References and advisories
8- https://git.kernel.org/stable/c/a7d2642a50282322bc33f34ee7305f2b793df494
- https://git.kernel.org/stable/c/068ad9b85f681755f751ebab82ae98146cec163d
- https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2
- https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90
- https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4
- https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a
- https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71
- https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02
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Details
- Published
- 2026-08-15
- Last updated
- 2026-10-20
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.15%
Probability of exploitation in 30 days
4.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-862Missing Authorization