CVE-2026-72051
Last modified
CVE-2026-72051 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink ip6_tnl_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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink ip6_tnl_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 ip6_tnl_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 0bd8762824e73a3cce7b7560a97463301764b616, < 2d53ee7daabe733deb81f51d2cc90188f8ad59a1; >= 0bd8762824e73a3cce7b7560a97463301764b616, < 82e53e7281c71e174f9f5877c566a623c637b406; >= 0bd8762824e73a3cce7b7560a97463301764b616, < 5252db8fb604321133138c7069d6fc3fcd89cdee; >= 0bd8762824e73a3cce7b7560a97463301764b616, < 2636d061bc237a2446a146e42dcc6563acfa7432; >= 0bd8762824e73a3cce7b7560a97463301764b616, < 7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa; >= 0bd8762824e73a3cce7b7560a97463301764b616, < 234cd54fc500f69db43e37de38603da617fbbeea; >= 0bd8762824e73a3cce7b7560a97463301764b616, < d4bcc202a3530c856e1cb183384bc9cc8fddab22; >= 0bd8762824e73a3cce7b7560a97463301764b616, < 2496fa0b7d180b3ad356b514e7ff93bb14e6140a |
| Linux | Linux | 3.12 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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