CVE Watch19 oct 2026

CVE-2026-72055

In the Linux kernel, the following vulnerability has been resolved: net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink

CVSS

8.8

Alto

EPSS

0.2%

KEV

—

Exploit Today

0-100

Publicado: 15 ago 2026 · Última mod.: 19 oct 2026 · CWE-862

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-10-022026-10-29

Descripción técnica

In the Linux kernel, the following vulnerability has been resolved: net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink vti6_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 vti6_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.

Referencias oficiales

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