8.8

CVE-2026-72053: linux Missing Authorization

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-72053DEBIAN-CVE-2026-72053
Published 15-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-72053 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 · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 24
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: ipip: require CAP_NET_ADMIN in the device netns for changelink ipip_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 ipip_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

-0.01 pp

From 0.16% 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) | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < a7d2642a50282322bc33f34ee7305f2b793df494 | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < 068ad9b85f681755f751ebab82ae98146cec163d | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < 91571643e554ae89a91942380d5f5361fb7060a2 | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < 983cc4aa7e6f633b34c3ee743771252d7afa9a90 | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < 26544021d5c49cc6ae8a968ccb5033e6363854a4 | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < 68cadc3698c7de88966d306d12ec9c6217da228a | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < d49edcc65e0a37cc9b386a94415c5d6670ca8b71 | ≥ 6c742e714d8c282fd8f8b22d3e20b5141738c1ee, < 8211a26324667980a463c069469a818e71207e02 | 3.12

3 vendors · 171 products

References

21 links
Show all 21 references