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8.8
HIGH CVSS 3.1
CVE-2026-72053
net: ipip: require CAP_NET_ADMIN in the device netns for changelink
Overview
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.

Details
INFO

Published Date :

Aug. 15, 2026, 6:21 a.m.

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72053 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Ensure CAP_NET_ADMIN capability for device netns in ipip changelink operation.
  • Gate ipip_changelink with rtnl_dev_link_net_capable.
  • Verify CAP_NET_ADMIN in the device netns.
  • Apply necessary kernel patches or updates.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72053.

URL Resource
https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4
https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a
https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02
https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2
https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90
https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72053 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72053 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72053 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72053 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '91571643e554ae89a91942380d5f5361fb7060a2', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '983cc4aa7e6f633b34c3ee743771252d7afa9a90', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '26544021d5c49cc6ae8a968ccb5033e6363854a4', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '68cadc3698c7de88966d306d12ec9c6217da228a', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': 'd49edcc65e0a37cc9b386a94415c5d6670ca8b71', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '8211a26324667980a463c069469a818e71207e02', 'versionType': 'git'}], 'programFiles': ['net/ipv4/ipip.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ipv4/ipip.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '91571643e554ae89a91942380d5f5361fb7060a2', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '983cc4aa7e6f633b34c3ee743771252d7afa9a90', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '26544021d5c49cc6ae8a968ccb5033e6363854a4', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '68cadc3698c7de88966d306d12ec9c6217da228a', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': 'd49edcc65e0a37cc9b386a94415c5d6670ca8b71', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '8211a26324667980a463c069469a818e71207e02', 'versionType': 'git'}], 'programFiles': ['net/ipv4/ipip.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ipv4/ipip.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '91571643e554ae89a91942380d5f5361fb7060a2', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '983cc4aa7e6f633b34c3ee743771252d7afa9a90', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '26544021d5c49cc6ae8a968ccb5033e6363854a4', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '68cadc3698c7de88966d306d12ec9c6217da228a', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': 'd49edcc65e0a37cc9b386a94415c5d6670ca8b71', 'versionType': 'git'}, {'status': 'affected', 'version': '6c742e714d8c282fd8f8b22d3e20b5141738c1ee', 'lessThan': '8211a26324667980a463c069469a818e71207e02', 'versionType': 'git'}], 'programFiles': ['net/ipv4/ipip.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ipv4/ipip.c'], 'defaultStatus': 'affected'}]
    Added 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.
    Added Reference https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4
    Added Reference https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a
    Added Reference https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02
    Added Reference https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2
    Added Reference https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90
    Added Reference https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact