CVE-2026-72229
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.
How to fix
- Linux Linux86e32dfb6a6fe29898f4a562b7b6e38e480bba4d, 06ae245168268b705a204f93c318b30107d10e92, dbca15fcbeed5276af440a53aed3901590fa7fc9, f2423da55976ea249f73029e468aefda4b94acba, f15ca6250591cfe78408114a54eaa8d58da51bfa, c945f6007e7851e74706c72f98763023699bcd97, 5a82c558098889cc8bfff85cc62f563833205d91, 8669a550c752d86baebc5fdc83b8ff35c4372c0e or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < 06ae245168268b705a204f93c318b30107d10e92, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < dbca15fcbeed5276af440a53aed3901590fa7fc9, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < f2423da55976ea249f73029e468aefda4b94acba, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < f15ca6250591cfe78408114a54eaa8d58da51bfa, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < c945f6007e7851e74706c72f98763023699bcd97, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < 5a82c558098889cc8bfff85cc62f563833205d91, 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 ≤ v < 8669a550c752d86baebc5fdc83b8ff35c4372c0e, 3.13 | 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d, 06ae245168268b705a204f93c318b30107d10e92, dbca15fcbeed5276af440a53aed3901590fa7fc9, f2423da55976ea249f73029e468aefda4b94acba, f15ca6250591cfe78408114a54eaa8d58da51bfa, c945f6007e7851e74706c72f98763023699bcd97, 5a82c558098889cc8bfff85cc62f563833205d91, 8669a550c752d86baebc5fdc83b8ff35c4372c0e |
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