0.0
NA
CVE-2026-72229
batman-adv: clean untagged VLAN on netdev registration failure
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: clean untagged VLAN on netdev registration failure When an mesh interface is registered, it creates an untagged struct batadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in this process, another receiver of this notification can veto the registration. The netdev registration will be aborted because of this veto. The register_netdevice() call will try to clean up the net_device using unregister_netdevice_queue() - which only uses the .priv_destructor to free private resources. In this situation, .dellink will not be called. The cleanup of the untagged batadv_meshif_vlan must thefore be done in the destructor to avoid a leak of this object.
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
Solution
Fix memory leak by cleaning up untagged VLAN in the destructor.
- Apply the kernel patch to fix the untagged VLAN cleanup.
- Ensure .priv_destructor handles untagged VLAN cleanup.
- Test interface registration after patch application.
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-2026-72229.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72229 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-2026-72229
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-2026-72229 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72229 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 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '86e32dfb6a6fe29898f4a562b7b6e38e480bba4d', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '06ae245168268b705a204f93c318b30107d10e92', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'dbca15fcbeed5276af440a53aed3901590fa7fc9', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'f2423da55976ea249f73029e468aefda4b94acba', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'f15ca6250591cfe78408114a54eaa8d58da51bfa', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'c945f6007e7851e74706c72f98763023699bcd97', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '5a82c558098889cc8bfff85cc62f563833205d91', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '8669a550c752d86baebc5fdc83b8ff35c4372c0e', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/main.c', 'net/batman-adv/mesh-interface.c', 'net/batman-adv/mesh-interface.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.13', '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-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/main.c', 'net/batman-adv/mesh-interface.c', 'net/batman-adv/mesh-interface.h'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '86e32dfb6a6fe29898f4a562b7b6e38e480bba4d', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '06ae245168268b705a204f93c318b30107d10e92', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'dbca15fcbeed5276af440a53aed3901590fa7fc9', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'f2423da55976ea249f73029e468aefda4b94acba', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'f15ca6250591cfe78408114a54eaa8d58da51bfa', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'c945f6007e7851e74706c72f98763023699bcd97', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '5a82c558098889cc8bfff85cc62f563833205d91', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '8669a550c752d86baebc5fdc83b8ff35c4372c0e', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/main.c', 'net/batman-adv/mesh-interface.c', 'net/batman-adv/mesh-interface.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.13', '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/batman-adv/main.c', 'net/batman-adv/mesh-interface.c', 'net/batman-adv/mesh-interface.h'], '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': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '86e32dfb6a6fe29898f4a562b7b6e38e480bba4d', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '06ae245168268b705a204f93c318b30107d10e92', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'dbca15fcbeed5276af440a53aed3901590fa7fc9', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'f2423da55976ea249f73029e468aefda4b94acba', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'f15ca6250591cfe78408114a54eaa8d58da51bfa', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': 'c945f6007e7851e74706c72f98763023699bcd97', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '5a82c558098889cc8bfff85cc62f563833205d91', 'versionType': 'git'}, {'status': 'affected', 'version': '5d2c05b213377694a2aa8ce1ed9b23f7c39b0569', 'lessThan': '8669a550c752d86baebc5fdc83b8ff35c4372c0e', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/main.c', 'net/batman-adv/mesh-interface.c', 'net/batman-adv/mesh-interface.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.13', '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-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/main.c', 'net/batman-adv/mesh-interface.c', 'net/batman-adv/mesh-interface.h'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: clean untagged VLAN on netdev registration failure When an mesh interface is registered, it creates an untagged struct batadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in this process, another receiver of this notification can veto the registration. The netdev registration will be aborted because of this veto. The register_netdevice() call will try to clean up the net_device using unregister_netdevice_queue() - which only uses the .priv_destructor to free private resources. In this situation, .dellink will not be called. The cleanup of the untagged batadv_meshif_vlan must thefore be done in the destructor to avoid a leak of this object. Added Reference https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92 Added Reference https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91 Added Reference https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e Added Reference https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d Added Reference https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97 Added Reference https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9 Added Reference https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa Added Reference https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba
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.