What is CVE-2026-98901?

CVE-2026-98901 is a unscored severity Linux kernel vulnerability. CVE-2026-98901 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-98901?

CVE-2026-98901 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-98901?

Yes, CVE-2026-98901 has been patched. Fixed versions include 6.6.158, 6.12.111, 6.18.53 and others.

Is CVE-2026-98901 actively exploited?

CVE-2026-98901 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-98901

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix lease break and ack state handling Do not skip valid lease states containing WRITE_CACHING when breaking level-II/read leases for writes and truncates. Handle lease break acknowledgments according to the SMB2 rule that the acknowledged state must be a subset of the server's break target. Apply the acknowledged state directly and keep the break pending on failed ACKs.

Package Linux Kernel

Published 2026-10-23

Last modified 2026-10-23

Patch available

Yes

Affected versions

Fixed in 6.6.158, 6.12.111, 6.18.53, 7.2 and their respective stable series.

Fixed in

✓ 6.6.158 6.6.x ✓ 6.12.111 6.12.x ✓ 6.18.53 6.18.x ✓ 7.2

References

4 total

Frequently asked questions

What is CVE-2026-98901?

CVE-2026-98901 is a unscored severity Linux kernel vulnerability . CVE-2026-98901 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-98901?

Yes. CVE-2026-98901 has been patched. Fixed versions include 6.6.158, 6.12.111, 6.18.53 and others.
Is CVE-2026-98901 actively exploited?

No. CVE-2026-98901 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.