CVE-2026-72229

batman-adv: clean untagged VLAN on netdev registration failure

State: Published
Severity: Not scored
Published: Aug 15, 2026
Updated: Aug 17, 2026
Reserved: Aug 9, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 86e32dfb6a6fe29898f4a562b7b6e38e480bba4dAffected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 06ae245168268b705a204f93c318b30107d10e92Affected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before dbca15fcbeed5276af440a53aed3901590fa7fc9Affected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before f2423da55976ea249f73029e468aefda4b94acbaAffected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before f15ca6250591cfe78408114a54eaa8d58da51bfaAffected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before c945f6007e7851e74706c72f98763023699bcd97Affected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 5a82c558098889cc8bfff85cc62f563833205d91Affected 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 8669a550c752d86baebc5fdc83b8ff35c4372c0eAffected
LinuxLinux	3.13Affected before 3.13Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 86e32dfb6a6fe29898f4a562b7b6e38e480bba4dAffected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 06ae245168268b705a204f93c318b30107d10e92Affected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before dbca15fcbeed5276af440a53aed3901590fa7fc9Affected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before f2423da55976ea249f73029e468aefda4b94acbaAffected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before f15ca6250591cfe78408114a54eaa8d58da51bfaAffected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before c945f6007e7851e74706c72f98763023699bcd97Affected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 5a82c558098889cc8bfff85cc62f563833205d91Affected
5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 to before 8669a550c752d86baebc5fdc83b8ff35c4372c0eAffected

LinuxLinux

3.13Affected
before 3.13Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.