ksmbd: call rcu_barrier() in ksmbd_server_exit()

{
  "id": "7967eda24d2ab2c3606360d3b4472e85533d6fc416e899443371a19362afc4aa",
  "url": "https://osv.dev/vulnerability/CVE-2023-32246",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ksmbd: call rcu_barrier() in ksmbd_server_exit()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ksmbd: call rcu_barrier() in ksmbd_server_exit() racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcu_barrier() is not called at module unload time, so nothing prevents ksmbd from getting unloaded while it still has RCU callbacks pending. It leads to trigger unintended execution of kernel code locally and use to defeat protections such as Kernel Lockdown",
    "evidence": "osv:CVE-2023-32246",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.111",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.28",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.15",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-32246",
      "aliases": [
        "CVE-2023-32246"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9"
                },
                {
                  "fixed": "c053e389db0d892e2ff5a60ec5e533b976503795"
                },
                {
                  "fixed": "b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2"
                },
                {
                  "fixed": "d4174505016a3b2996eb7ff1530dcabbf15d47b6"
                },
                {
                  "fixed": "5a7090ccc242ab009ee7769e9d7fad6644dbe9bd"
                },
                {
                  "fixed": "eb307d09fe15844fdaebeb8cc8c9b9e925430aa5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-32246.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.111"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.28"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.15"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.3.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-32246.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.823932485Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd",
        "https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2",
        "https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795",
        "https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6",
        "https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/32xxx/CVE-2023-32246.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-32246",
        "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/2023/32xxx/CVE-2023-32246.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-32246",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 511636,
  "published_at": "2025-08-16T13:22:09.212+00:00"
}