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CVE-2026-72229

UnknownEPSS 0.21%

Last modified

CVE-2026-72229 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.21%

11.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < 06ae245168268b705a204f93c318b30107d10e92; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < dbca15fcbeed5276af440a53aed3901590fa7fc9; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < f2423da55976ea249f73029e468aefda4b94acba; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < f15ca6250591cfe78408114a54eaa8d58da51bfa; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < c945f6007e7851e74706c72f98763023699bcd97; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < 5a82c558098889cc8bfff85cc62f563833205d91; >= 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569, < 8669a550c752d86baebc5fdc83b8ff35c4372c0e
LinuxLinux3.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72229?
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 severe is CVE-2026-72229?
Severity scoring for CVE-2026-72229 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72229?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST