CVE-2026-98620
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.
Affected versions
Linux kernel versions
4.9
and later are affected. Fixed in
6.6.158,
6.12.112,
6.18.55,
7.2.9,
7.3
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-98620?
CVE-2026-98620 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.9 onward and has been patched in 6.6.158, 6.12.112, 6.18.55 and others. CVE-2026-98620 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98620?
Yes. CVE-2026-98620 has been patched. Fixed versions include 6.6.158, 6.12.112, 6.18.55 and others. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98620 actively exploited?
No. CVE-2026-98620 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.