{"id":"CVE-2026-72229","title":"batman-adv: clean untagged VLAN on netdev registration failure","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: clean untagged VLAN on netdev registration failure\n\nWhen an mesh interface is registered, it creates an untagged struct\nbatadv_meshif_vlan on top of it via …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 06ae245168268b705a204f93c318b30107d10e92","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < dbca15fcbeed5276af440a53aed3901590fa7fc9","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < f2423da55976ea249f73029e468aefda4b94acba","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < f15ca6250591cfe78408114a54eaa8d58da51bfa","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < c945f6007e7851e74706c72f98763023699bcd97","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 5a82c558098889cc8bfff85cc62f563833205d91","Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 8669a550c752d86baebc5fdc83b8ff35c4372c0e","Linux 3.13"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:53:08.171910Z"},"published":"2026-08-15","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:55:23.183Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72229","references":[{"url":"https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d"},{"url":"https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92"},{"url":"https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9"},{"url":"https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba"},{"url":"https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa"},{"url":"https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97"},{"url":"https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91"},{"url":"https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e"}],"tags":["cve.org"],"epss":0.0022,"epssPercentile":0.1254,"ingestedAt":"2026-11-06T18:00:12.584Z","slug":"CVE-2026-72229","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: clean untagged VLAN on netdev registration failure\n\nWhen an mesh interface is registered, it creates an untagged struct\nbatadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in\nthis process, another receiver of this notification can veto the\nregistration. The netdev registration will be aborted because of this veto.\n\nThe register_netdevice() call will try to clean up the net_device using\nunregister_netdevice_queue() - which only uses the .priv_destructor to\nfree private resources. In this situation, .dellink will not be called.\n\nThe cleanup of the untagged batadv_meshif_vlan must thefore be done in the\ndestructor to avoid a leak of this object.\n\n## Affected\n\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 06ae245168268b705a204f93c318b30107d10e92`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < dbca15fcbeed5276af440a53aed3901590fa7fc9`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < f2423da55976ea249f73029e468aefda4b94acba`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < f15ca6250591cfe78408114a54eaa8d58da51bfa`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < c945f6007e7851e74706c72f98763023699bcd97`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 5a82c558098889cc8bfff85cc62f563833205d91`\n- `Linux >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 < 8669a550c752d86baebc5fdc83b8ff35c4372c0e`\n- `Linux 3.13`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}