{"id":"CVE-2026-72229","state":"PUBLISHED","title":"batman-adv: clean untagged VLAN on netdev registration failure","description":"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 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.","publishedAt":"2026-08-15T05:54:20.512Z","updatedAt":"2026-08-17T05:10:45.285Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"86e32dfb6a6fe29898f4a562b7b6e38e480bba4d","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"06ae245168268b705a204f93c318b30107d10e92","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"dbca15fcbeed5276af440a53aed3901590fa7fc9","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"f2423da55976ea249f73029e468aefda4b94acba","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"f15ca6250591cfe78408114a54eaa8d58da51bfa","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"c945f6007e7851e74706c72f98763023699bcd97","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"5a82c558098889cc8bfff85cc62f563833205d91","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"8669a550c752d86baebc5fdc83b8ff35c4372c0e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/main.c","net/batman-adv/mesh-interface.c","net/batman-adv/mesh-interface.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/main.c","net/batman-adv/mesh-interface.c","net/batman-adv/mesh-interface.h"]}],"references":["https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d","https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92","https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9","https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba","https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa","https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97","https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91","https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72229.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72229","state":"PUBLISHED","datePublished":"2026-08-15T05:54:20.512Z","dateUpdated":"2026-08-17T05:10:45.285Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.913Z"},"containers":{"cna":{"title":"batman-adv: clean untagged VLAN on netdev registration failure","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"86e32dfb6a6fe29898f4a562b7b6e38e480bba4d","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"06ae245168268b705a204f93c318b30107d10e92","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"dbca15fcbeed5276af440a53aed3901590fa7fc9","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"f2423da55976ea249f73029e468aefda4b94acba","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"f15ca6250591cfe78408114a54eaa8d58da51bfa","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"c945f6007e7851e74706c72f98763023699bcd97","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"5a82c558098889cc8bfff85cc62f563833205d91","versionType":"git"},{"version":"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569","status":"affected","lessThan":"8669a550c752d86baebc5fdc83b8ff35c4372c0e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/main.c","net/batman-adv/mesh-interface.c","net/batman-adv/mesh-interface.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/main.c","net/batman-adv/mesh-interface.c","net/batman-adv/mesh-interface.h"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:10:45.285Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}