CVE-2026-72051

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Source
https://cve.org/CVERecord?id=CVE-2026-72051
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72051.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-72051
Downstream
Published
2026-08-15T05:52:08Z
Modified
2026-08-25T03:51:31Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72051.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0bd8762824e73a3cce7b7560a97463301764b616
Fixed
2d53ee7daabe733deb81f51d2cc90188f8ad59a1
Fixed
82e53e7281c71e174f9f5877c566a623c637b406
Fixed
5252db8fb604321133138c7069d6fc3fcd89cdee
Fixed
2636d061bc237a2446a146e42dcc6563acfa7432
Fixed
7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa
Fixed
234cd54fc500f69db43e37de38603da617fbbeea
Fixed
d4bcc202a3530c856e1cb183384bc9cc8fddab22
Fixed
2496fa0b7d180b3ad356b514e7ff93bb14e6140a

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72051.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.12.0
Fixed
5.10.266
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.217
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.184
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.148
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.101
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.40
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72051.json"