ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write

{
  "id": "4eabc916691cb2c5915c8bd66e49cdac52c84213c8dd608f2ae6c1d02cbb3a3e",
  "url": "https://osv.dev/vulnerability/CVE-2024-56626",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write An offset from client could be a negative value, It could allows to write data outside the bounds of the allocated buffer. Note that this issue is coming when setting 'vfs objects = streams_xattr parameter' in ksmbd.conf.",
    "evidence": "osv:CVE-2024-56626",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.176",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.120",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.66",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-56626",
      "aliases": [
        "CVE-2024-56626"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/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": "0626e6641f6b467447c81dd7678a69c66f7746cf"
                },
                {
                  "fixed": "1aea5c9470be2c7129704fb1b9562b1e3e0576f8"
                },
                {
                  "fixed": "8cd7490fc0f268883e86e840cda5311257af69ca"
                },
                {
                  "fixed": "164d3597d26d9acff5d5b8bc3208bdcca942dd6a"
                },
                {
                  "fixed": "c5797f195c67132d061d29c57a7c6d30530686f0"
                },
                {
                  "fixed": "313dab082289e460391c82d855430ec8a28ddf81"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56626.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "5.15.176"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.120"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
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                {
                  "fixed": "6.6.66"
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              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56626.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.316842381Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/164d3597d26d9acff5d5b8bc3208bdcca942dd6a",
        "https://git.kernel.org/stable/c/1aea5c9470be2c7129704fb1b9562b1e3e0576f8",
        "https://git.kernel.org/stable/c/313dab082289e460391c82d855430ec8a28ddf81",
        "https://git.kernel.org/stable/c/8cd7490fc0f268883e86e840cda5311257af69ca",
        "https://git.kernel.org/stable/c/c5797f195c67132d061d29c57a7c6d30530686f0",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56626.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-56626",
        "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/2024/56xxx/CVE-2024-56626.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-56626",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504549,
  "published_at": "2024-12-27T14:51:29.078+00:00"
}