8.8

CVE-2026-72055: linux Missing Authorization

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-72055DEBIAN-CVE-2026-72055
Published 15-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-72055 is a high (CVSS 8.8) Missing Authorization vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.8% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 29 · Related 29
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1SUSE-SU-2026:24181-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

-0.02 pp

From 0.17% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 61220ab349485d911083d0b7990ccd3db6c63297, < f5254e7766b4ac02b66b2ccef896cd278503cb11 | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < ef897249dc957089e6f7f11ceea699e093ad51bd | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < c64b9ae7eb97e81d54b792910a3aeafd92566c79 | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < 0b2f9c908f930ec4be17d389723f9a202d6a883c | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < f97e93ebf2f9b8ef3b87f7a9371255e84d151587 | ≥ 61220ab349485d911083d0b7990ccd3db6c63297, < e2ac3b242c37dff323a964962e43854f4b1a2b79 | 3.15

3 vendors · 171 products

References

27 links
Show all 27 references