8.8
HIGH
CVSS 3.1
CVE-2026-72052
net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink() and ip6erspan_changelink() operate 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 both ops on rtnl_dev_link_net_capable() at their 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
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
Apply kernel updates to enforce CAP_NET_ADMIN in the correct network namespace.
- Update the Linux kernel to the latest stable version.
- Ensure CAP_NET_ADMIN is checked in the tunnel link netns.
- Verify network device permissions.
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-2026-72052.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72052 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-2026-72052
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-2026-72052 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72052 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': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '129f8939e5af683cec3a1a5edcb40a64636ad81e', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'e3724dedf57761c6de52f4d604ec74f66fd61611', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '220162c9fedbe992da70d70f50a10da4f45f914c', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '1d4d8ee002083ca4ead5353662bf8362428af57f', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '0caa9f348f8b5356900de77b0bb89a697c4aff20', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '03d8843b143ebbbfaf48511922abc6e886575a61', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'c38c8b0db3c65b597e7ece317b6cb59de3d15e69', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'f00a50876d2818bd6dc86fa98b3ef360884c53c8', 'versionType': 'git'}, {'status': 'affected', 'version': 'd0201d2405dac8d9b16773e97709925e397552d0', 'versionType': 'git'}, {'status': 'affected', 'version': '7943bb0f06365cf5e32f3cf8a6b29eeae981fb8a', 'versionType': 'git'}, {'status': 'affected', 'version': '4.19.100', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.16', 'lessThan': '5.5', 'versionType': 'semver'}], 'programFiles': ['net/ipv6/ip6_gre.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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/ipv6/ip6_gre.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '129f8939e5af683cec3a1a5edcb40a64636ad81e', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'e3724dedf57761c6de52f4d604ec74f66fd61611', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '220162c9fedbe992da70d70f50a10da4f45f914c', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '1d4d8ee002083ca4ead5353662bf8362428af57f', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '0caa9f348f8b5356900de77b0bb89a697c4aff20', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '03d8843b143ebbbfaf48511922abc6e886575a61', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'c38c8b0db3c65b597e7ece317b6cb59de3d15e69', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'f00a50876d2818bd6dc86fa98b3ef360884c53c8', 'versionType': 'git'}, {'status': 'affected', 'version': 'd0201d2405dac8d9b16773e97709925e397552d0', 'versionType': 'git'}, {'status': 'affected', 'version': '7943bb0f06365cf5e32f3cf8a6b29eeae981fb8a', 'versionType': 'git'}, {'status': 'affected', 'version': '4.19.100', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.16', 'lessThan': '5.5', 'versionType': 'semver'}], 'programFiles': ['net/ipv6/ip6_gre.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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/ipv6/ip6_gre.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': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '129f8939e5af683cec3a1a5edcb40a64636ad81e', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'e3724dedf57761c6de52f4d604ec74f66fd61611', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '220162c9fedbe992da70d70f50a10da4f45f914c', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '1d4d8ee002083ca4ead5353662bf8362428af57f', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '0caa9f348f8b5356900de77b0bb89a697c4aff20', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': '03d8843b143ebbbfaf48511922abc6e886575a61', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'c38c8b0db3c65b597e7ece317b6cb59de3d15e69', 'versionType': 'git'}, {'status': 'affected', 'version': '690afc165bb314354667f67157c1a1aea7dc797a', 'lessThan': 'f00a50876d2818bd6dc86fa98b3ef360884c53c8', 'versionType': 'git'}, {'status': 'affected', 'version': 'd0201d2405dac8d9b16773e97709925e397552d0', 'versionType': 'git'}, {'status': 'affected', 'version': '7943bb0f06365cf5e32f3cf8a6b29eeae981fb8a', 'versionType': 'git'}, {'status': 'affected', 'version': '4.19.100', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.16', 'lessThan': '5.5', 'versionType': 'semver'}], 'programFiles': ['net/ipv6/ip6_gre.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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/ipv6/ip6_gre.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink() and ip6erspan_changelink() operate 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 both ops on rtnl_dev_link_net_capable() at their top, before any attribute is parsed. Added Reference https://git.kernel.org/stable/c/03d8843b143ebbbfaf48511922abc6e886575a61 Added Reference https://git.kernel.org/stable/c/0caa9f348f8b5356900de77b0bb89a697c4aff20 Added Reference https://git.kernel.org/stable/c/129f8939e5af683cec3a1a5edcb40a64636ad81e Added Reference https://git.kernel.org/stable/c/1d4d8ee002083ca4ead5353662bf8362428af57f Added Reference https://git.kernel.org/stable/c/220162c9fedbe992da70d70f50a10da4f45f914c Added Reference https://git.kernel.org/stable/c/c38c8b0db3c65b597e7ece317b6cb59de3d15e69 Added Reference https://git.kernel.org/stable/c/e3724dedf57761c6de52f4d604ec74f66fd61611 Added Reference https://git.kernel.org/stable/c/f00a50876d2818bd6dc86fa98b3ef360884c53c8
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.