CVE-2026-72229
batman-adv: clean untagged VLAN on netdev registration failure
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < 06ae245168268b705a204f93c318b30107d10e92 (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < dbca15fcbeed5276af440a53aed3901590fa7fc9 (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < f2423da55976ea249f73029e468aefda4b94acba (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < f15ca6250591cfe78408114a54eaa8d58da51bfa (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < c945f6007e7851e74706c72f98763023699bcd97 (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < 5a82c558098889cc8bfff85cc62f563833205d91 (affected, git) ≥ 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569; < 8669a550c752d86baebc5fdc83b8ff35c4372c0e (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
3.13 (affected) ≥ 0; < 3.13 (unaffected, semver) ≥ 5.10.261; ≤ 5.10.* (unaffected, semver) ≥ 5.15.212; ≤ 5.15.* (unaffected, semver) ≥ 6.1.178; ≤ 6.1.* (unaffected, semver) ≥ 6.6.145; ≤ 6.6.* (unaffected, semver) ≥ 6.12.97; ≤ 6.12.* (unaffected, semver) ≥ 6.18.40; ≤ 6.18.* (unaffected, semver) ≥ 7.1.5; ≤ 7.1.* (unaffected, semver) ≥ 7.2; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4dCNA: Linux
- https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92CNA: Linux
- https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9CNA: Linux
- https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acbaCNA: Linux
- https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfaCNA: Linux
- https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97CNA: Linux
- https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91CNA: Linux
- https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0eCNA: Linux
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