CVE-2026-72051net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- 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 0bd8762824e73a3cce7b7560a97463301764b616 before 2d53ee7daabe733deb81f51d2cc90188f8ad59a1; from 0bd8762824e73a3cce7b7560a97463301764b616 before 82e53e7281c71e174f9f5877c566a623c637b406; from 0bd8762824e73a3cce7b7560a97463301764b616 before 5252db8fb604321133138c7069d6fc3fcd89cdee; from 0bd8762824e73a3cce7b7560a97463301764b616 before 2636d061bc237a2446a146e42dcc6563acfa7432; from 0bd8762824e73a3cce7b7560a97463301764b616 before 7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa; from 0bd8762824e73a3cce7b7560a97463301764b616 before 234cd54fc500f69db43e37de38603da617fbbeea; from 0bd8762824e73a3cce7b7560a97463301764b616 before d4bcc202a3530c856e1cb183384bc9cc8fddab22; from 0bd8762824e73a3cce7b7560a97463301764b616 before 2496fa0b7d180b3ad356b514e7ff93bb14e6140a | CNA record |
References
- https://git.kernel.org/stable/c/2d53ee7daabe733deb81f51d2cc90188f8ad59a1
- https://git.kernel.org/stable/c/82e53e7281c71e174f9f5877c566a623c637b406
- https://git.kernel.org/stable/c/5252db8fb604321133138c7069d6fc3fcd89cdee
- https://git.kernel.org/stable/c/2636d061bc237a2446a146e42dcc6563acfa7432
- https://git.kernel.org/stable/c/7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa
- https://git.kernel.org/stable/c/234cd54fc500f69db43e37de38603da617fbbeea
- https://git.kernel.org/stable/c/d4bcc202a3530c856e1cb183384bc9cc8fddab22
- https://git.kernel.org/stable/c/2496fa0b7d180b3ad356b514e7ff93bb14e6140a
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.