{"id":"CVE-2026-98901","title":"ksmbd: fix lease break and ack state handling","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix lease break and ack state handling\n\nDo not skip valid lease states containing WRITE_CACHING when breaking\nlevel-II/read leases for writes and truncates.\n\nHan…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 17699905a381621c1cee5b6528feb05acedc86a4","Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 3251ea36df5eef58aa207fbee48849d89b922ea6","Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < fba4653a0b4dc2f6d42600abe21fb326292f70ff","Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 5015191096db311759fef98769270336cd8b1324","Linux 5.15"],"published":"2026-10-23","updated":"2026-10-26","sourceUpdated":"2026-10-26T06:56:29.179Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98901","references":[{"url":"https://git.kernel.org/stable/c/17699905a381621c1cee5b6528feb05acedc86a4"},{"url":"https://git.kernel.org/stable/c/3251ea36df5eef58aa207fbee48849d89b922ea6"},{"url":"https://git.kernel.org/stable/c/fba4653a0b4dc2f6d42600abe21fb326292f70ff"},{"url":"https://git.kernel.org/stable/c/5015191096db311759fef98769270336cd8b1324"}],"tags":["cve.org"],"epss":0.00174,"epssPercentile":0.06826,"ingestedAt":"2026-10-23T13:24:55.575Z","slug":"CVE-2026-98901","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix lease break and ack state handling\n\nDo not skip valid lease states containing WRITE_CACHING when breaking\nlevel-II/read leases for writes and truncates.\n\nHandle lease break acknowledgments according to the SMB2 rule that the\nacknowledged state must be a subset of the server's break target. Apply\nthe acknowledged state directly and keep the break pending on failed ACKs.\n\n## Affected\n\n- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 17699905a381621c1cee5b6528feb05acedc86a4`\n- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 3251ea36df5eef58aa207fbee48849d89b922ea6`\n- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < fba4653a0b4dc2f6d42600abe21fb326292f70ff`\n- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 5015191096db311759fef98769270336cd8b1324`\n- `Linux 5.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}