cifs: prevent use-after-free by freeing the cfile later

{
  "id": "73b1a983b0ed30bd62a10db0c16463c2b40b36b650ef2f794d57953daa61315c",
  "url": "https://osv.dev/vulnerability/CVE-2023-53377",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cifs: prevent use-after-free by freeing the cfile later",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: cifs: prevent use-after-free by freeing the cfile later In smb2_compound_op we have a possible use-after-free which can cause hard to debug problems later on. This was revealed during stress testing with KASAN enabled kernel. Fixing it by moving the cfile free call to a few lines below, after the usage.",
    "evidence": "osv:CVE-2023-53377",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.39",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.4.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-53377",
      "aliases": [
        "CVE-2023-53377"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "76894f3e2f71177747b8b4763fb180e800279585"
                },
                {
                  "fixed": "4fe07d55a5461e66a55fbefb57f85ff0facea32b"
                },
                {
                  "fixed": "b6353518ef8180816e863aa23b06456f395404d6"
                },
                {
                  "fixed": "d017880782cf71f8820ee4a2002843893176501d"
                },
                {
                  "fixed": "33f736187d08f6bc822117629f263b97d3df4165"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "6.0.16"
                },
                {
                  "fixed": "6.1"
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            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "2d046892a493d9760c35fdaefc3017f27f91b621"
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            }
          ],
          "versions": [
            "v6.0.19",
            "v6.0.18",
            "v6.0.17",
            "v6.0.16"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53377.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.39"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.3.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.4.0"
                },
                {
                  "fixed": "6.4.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53377.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.001228830Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/33f736187d08f6bc822117629f263b97d3df4165",
        "https://git.kernel.org/stable/c/4fe07d55a5461e66a55fbefb57f85ff0facea32b",
        "https://git.kernel.org/stable/c/b6353518ef8180816e863aa23b06456f395404d6",
        "https://git.kernel.org/stable/c/d017880782cf71f8820ee4a2002843893176501d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53377.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53377",
        "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/2023/53xxx/CVE-2023-53377.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53377",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487945,
  "published_at": "2025-09-18T13:33:23.162+00:00"
}