Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure If register_netdev() fails for one of the MTK_MAX_DEVS devices in mtk_probe(), the error path jumps to err_deinit_ppe, skipping mtk_unreg_dev(). The previously registered net_devices are then freed by mtk_free_dev() while still in NETREG_REGISTERED state, hitting the BUG_ON(dev->reg_state != NETREG_UNREGISTERED). Route the register_netdev() failure to err_unreg_netdev so the net_devices registered so far are properly unregistered before being freed.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4019

  Linux Kernel: Multiple vulnerabilities Translated from German

  CVE-2026-98866CVE-2026-98624CVE-2026-98745+326 more CVEs

[ References ]References

• git.kernel.org/stable/c/0fdb944d4df02223c67d5e65c4c134ecb57a5668
• git.kernel.org/stable/c/245bea0c7ab278150c70366bdeb69b901327133c
• git.kernel.org/stable/c/310d1ac61a4d5a2ca8356a3a48d263acf54503ce
• git.kernel.org/stable/c/7254b702e556158e34b4d7c168b5d8e7da5978af
• git.kernel.org/stable/c/ab3bde3b3e56331b4f53a1f6cf4e5e9d1c14c1a0