What is CVE-2026-72051?

CVE-2026-72051 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, affecting Linux kernel versions from 3.12 onward and patched in 5.10.266, 5.15.217, 6.1.184 and others. CVE-2026-72051 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-72051?

CVE-2026-72051 has a CVSS score of 8.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Is there a patch available for CVE-2026-72051?

Yes, CVE-2026-72051 has been patched. Fixed versions include 5.10.266, 5.15.217, 6.1.184 and others. If you are running Linux kernel 3.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-72051 actively exploited?

CVE-2026-72051 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-72051

High

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.

Package Linux Kernel

Published 2026-08-15

Last modified 2026-08-23

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected versions

Linux kernel versions 3.12 and later are affected. Fixed in 5.10.266, 5.15.217, 6.1.184, 6.6.148, 6.12.101, 6.18.40, 7.1.5, 7.2 and their respective stable series.

Affected from

≥ 3.12

Fixed in

✓ 5.10.266 5.10.x ✓ 5.15.217 5.15.x ✓ 6.1.184 6.1.x ✓ 6.6.148 6.6.x ✓ 6.12.101 6.12.x ✓ 6.18.40 6.18.x ✓ 7.1.5 7.1.x ✓ 7.2

References

8 total

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-72051

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2026-08-15

Modified 2026-08-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-72051?

CVE-2026-72051 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . It affects Linux kernel versions from 3.12 onward and has been patched in 5.10.266, 5.15.217, 6.1.184 and others. CVE-2026-72051 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-72051?

CVE-2026-72051 has a CVSS score of 8.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Is there a patch available for CVE-2026-72051?

Yes. CVE-2026-72051 has been patched. Fixed versions include 5.10.266, 5.15.217, 6.1.184 and others. If you are running Linux kernel 3.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-72051 actively exploited?

No. CVE-2026-72051 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.