{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9"
            },
            {
              "fixed": "17699905a381621c1cee5b6528feb05acedc86a4"
            },
            {
              "fixed": "3251ea36df5eef58aa207fbee48849d89b922ea6"
            },
            {
              "fixed": "fba4653a0b4dc2f6d42600abe21fb326292f70ff"
            },
            {
              "fixed": "5015191096db311759fef98769270336cd8b1324"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98901.json"
  },
  "details": "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\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.",
  "id": "CVE-2026-98901",
  "modified": "2026-10-28T02:31:05.795452532Z",
  "published": "2026-10-23T11:54:11.554Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17699905a381621c1cee5b6528feb05acedc86a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3251ea36df5eef58aa207fbee48849d89b922ea6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5015191096db311759fef98769270336cd8b1324"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fba4653a0b4dc2f6d42600abe21fb326292f70ff"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98901.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98901"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "ksmbd: fix lease break and ack state handling"
}