CVE-2026-98901ksmbd: fix lease break and ack state handling
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 28 days later
· 28 days later
Published
- 3 days later
· 3 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 17699905a381621c1cee5b6528feb05acedc86a4
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 3251ea36df5eef58aa207fbee48849d89b922ea6
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < fba4653a0b4dc2f6d42600abe21fb326292f70ff
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 5015191096db311759fef98769270336cd8b1324
- affected 5.15
- unaffected < 5.15
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References4
- https://git.kernel.org/stable/c/17699905a381621c1cee5b6528feb05acedc86a4 (opens in a new tab)
- https://git.kernel.org/stable/c/3251ea36df5eef58aa207fbee48849d89b922ea6 (opens in a new tab)
- https://git.kernel.org/stable/c/fba4653a0b4dc2f6d42600abe21fb326292f70ff (opens in a new tab)
- https://git.kernel.org/stable/c/5015191096db311759fef98769270336cd8b1324 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-108857 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98901)Record last updated .