Not yet scoredPublished Oct 23, 2026

CVE-2026-98901ksmbd: fix lease break and ack state handling

Updated under an hour ago (Oct 26, 2026, 8:40 PM ET)

Does this affect you?

It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 26, 2026
First seen by InfoSec Signals: Oct 23, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 17699905a381621c1cee5b6528feb05acedc86a4; from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 3251ea36df5eef58aa207fbee48849d89b922ea6; from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before fba4653a0b4dc2f6d42600abe21fb326292f70ff; from e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 before 5015191096db311759fef98769270336cd8b1324	CNA record

References

References

https://git.kernel.org/stable/c/17699905a381621c1cee5b6528feb05acedc86a4
https://git.kernel.org/stable/c/3251ea36df5eef58aa207fbee48849d89b922ea6
https://git.kernel.org/stable/c/fba4653a0b4dc2f6d42600abe21fb326292f70ff
https://git.kernel.org/stable/c/5015191096db311759fef98769270336cd8b1324

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.