smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open()

{
  "id": "8f41ce00e19a957f4352241b5c2d60817fe04d1cb749645dbf543303266a77f1",
  "url": "https://osv.dev/vulnerability/CVE-2024-46742",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open() null-ptr-deref will occur when (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) and parse_lease_state() return NULL. Fix this by check if 'lease_ctx_info' is NULL. Additionally, remove the redundant parentheses in parse_durable_handle_context().",
    "evidence": "osv:CVE-2024-46742",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.181",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.135",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.10.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-46742",
      "aliases": [
        "CVE-2024-46742"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0626e6641f6b467447c81dd7678a69c66f7746cf"
                },
                {
                  "fixed": "878f32878351104448b86ef5b85d1f8ed6f599fb"
                },
                {
                  "fixed": "ec28c35029b7930f31117f9284874b63bea4f31b"
                },
                {
                  "fixed": "07f384c5be1f8633b13f0a22616e227570450bc6"
                },
                {
                  "fixed": "3b692794b81f2ecad69a4adbba687f3836824ada"
                },
                {
                  "fixed": "4e8771a3666c8f216eefd6bd2fd50121c6c437db"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46742.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.181"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.135"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.51"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.10.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46742.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.967881882Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/07f384c5be1f8633b13f0a22616e227570450bc6",
        "https://git.kernel.org/stable/c/3b692794b81f2ecad69a4adbba687f3836824ada",
        "https://git.kernel.org/stable/c/4e8771a3666c8f216eefd6bd2fd50121c6c437db",
        "https://git.kernel.org/stable/c/878f32878351104448b86ef5b85d1f8ed6f599fb",
        "https://git.kernel.org/stable/c/ec28c35029b7930f31117f9284874b63bea4f31b",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46742.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-46742",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/46xxx/CVE-2024-46742.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-46742",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490368,
  "published_at": "2024-09-18T07:12:03.251+00:00"
}