CVE-2026-63997
In the Linux kernel, the following vulnerability has been resolved: ethtool: module: avoid leaking a netdev ref on module flash errors module_flash_fw_schedule() is missing undo for setting the "in_progress" flag and taking the netdev reference. Delay taking these, the device can't disappear while we are holding rtnl_lock.
Affected versions
Linux kernel versions
6.11
and later are affected. Fixed in
6.12.93,
6.18.35,
7.0.12,
7.1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-63997?
CVE-2026-63997 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.11 onward and has been patched in 6.12.93, 6.18.35, 7.0.12 and others. CVE-2026-63997 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-2026-63997?
Yes — CVE-2026-63997 has been patched. Fixed versions include 6.12.93, 6.18.35, 7.0.12 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-63997 actively exploited?
No — CVE-2026-63997 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.