CVE-2026-72229

batman-adv: clean untagged VLAN on netdev registration failure

N/A

Published: August 15, 2026 at 05:54 AM UTC

Updated: August 17, 2026 at 06:18 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.13 ≤ v < 5.10.2613.13 ≤ v < 5.15.2123.13 ≤ v < 6.1.1783.13 ≤ v < 6.12.973.13 ≤ v < 6.18.403.13 ≤ v < 6.6.1453.13 ≤ v < 7.1.53.13 ≤ v < 7.23.135d2c05b213377694a2aa8ce1ed9b23f7c39b0569

Vendor states this is fixed in 06ae245168268b705a204f93c318b30107d10e92 (fixed)

Vendor states this is fixed in 5a82c558098889cc8bfff85cc62f563833205d91 (fixed)

Vendor states this is fixed in 8669a550c752d86baebc5fdc83b8ff35c4372c0e (fixed)

Vendor states this is fixed in 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d (fixed)

Vendor states this is fixed in c945f6007e7851e74706c72f98763023699bcd97 (fixed)

Vendor states this is fixed in dbca15fcbeed5276af440a53aed3901590fa7fc9 (fixed)

Vendor states this is fixed in f15ca6250591cfe78408114a54eaa8d58da51bfa (fixed)

Vendor states this is fixed in f2423da55976ea249f73029e468aefda4b94acba (fixed)

Vendor states this is fixed in 3.13 (unaffected)

Vendor states this is fixed in 5.10.261 (unaffected)

Vendor states this is fixed in 5.15.212 (unaffected)

Vendor states this is fixed in 6.1.178 (unaffected)