Answer in brief
CVE-2026-72055 records a High severity (CVSS 8.8) vulnerability in net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=61220ab349485d911083d0b7990ccd3db6c63297 <f5254e7766b4ac02b66b2ccef896cd278503cb11 || >=61220ab349485d911083d0b7990ccd3db6c63297 <ef897249dc957089e6f7f11ceea699e093ad51bd || >=61220ab349485d911083d0b7990ccd3db6c63297 <f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba || >=61220ab349485d911083d0b7990ccd3db6c63297 <c64b9ae7eb97e81d54b792910a3aeafd92566c79 || >=61220ab349485d911083d0b7990ccd3db6c63297 <b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf || >=61220ab349485d911083d0b7990ccd3db6c63297 <0b2f9c908f930ec4be17d389723f9a202d6a883c || >=61220ab349485d911083d0b7990ccd3db6c63297 <f97e93ebf2f9b8ef3b87f7a9371255e84d151587 || >=61220ab349485d911083d0b7990ccd3db6c63297 <e2ac3b242c37dff323a964962e43854f4b1a2b79 | f5254e7766b4ac02b66b2ccef896cd278503cb11, ef897249dc957089e6f7f11ceea699e093ad51bd, f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba, c64b9ae7eb97e81d54b792910a3aeafd92566c79, b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf, 0b2f9c908f930ec4be17d389723f9a202d6a883c, f97e93ebf2f9b8ef3b87f7a9371255e84d151587, e2ac3b242c37dff323a964962e43854f4b1a2b79 |
| Linux/Linuxgeneric | 3.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.