8.8

CVE-2026-72051: linux Missing Authorization

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-72051DEBIAN-CVE-2026-72051
Published 15-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-72051 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 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: 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.

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) | < 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)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.101-1 | < 7.1.5-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux1 product
  • linux≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 2d53ee7daabe733deb81f51d2cc90188f8ad59a1 | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 82e53e7281c71e174f9f5877c566a623c637b406 | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 5252db8fb604321133138c7069d6fc3fcd89cdee | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 2636d061bc237a2446a146e42dcc6563acfa7432 | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 234cd54fc500f69db43e37de38603da617fbbeea | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < d4bcc202a3530c856e1cb183384bc9cc8fddab22 | ≥ 0bd8762824e73a3cce7b7560a97463301764b616, < 2496fa0b7d180b3ad356b514e7ff93bb14e6140a | 3.12

3 vendors · 172 products

References

21 links
Show all 21 references