ksmbd: fix lease break and ack state handling
CVE-2026-98901 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-98901, released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 13.5 (trixie) | 6.12.111-1 | DEBIAN-CVE-2026-98901 | Oct 24, 2026 |
| linux · Debian 14 | 7.2.6-1 | DEBIAN-CVE-2026-98901 | Oct 24, 2026 |
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