ghsa-5p9g-wpq2-jmm7
Vulnerability from github
Published
2025-09-18 15:30
Modified
2025-09-18 15:30
Details

In the Linux kernel, the following vulnerability has been resolved:

sctp: fix a potential overflow in sctp_ifwdtsn_skip

Currently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only checks the pos against the end of the chunk. However, the data left for the last pos may be < sizeof(struct sctp_ifwdtsn_skip), and dereference it as struct sctp_ifwdtsn_skip may cause coverflow.

This patch fixes it by checking the pos against "the end of the chunk - sizeof(struct sctp_ifwdtsn_skip)" in sctp_ifwdtsn_skip, similar to sctp_fwdtsn_skip.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53372"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-18T14:15:39Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: fix a potential overflow in sctp_ifwdtsn_skip\n\nCurrently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only\nchecks the pos against the end of the chunk. However, the data left for\nthe last pos may be \u003c sizeof(struct sctp_ifwdtsn_skip), and dereference\nit as struct sctp_ifwdtsn_skip may cause coverflow.\n\nThis patch fixes it by checking the pos against \"the end of the chunk -\nsizeof(struct sctp_ifwdtsn_skip)\" in sctp_ifwdtsn_skip, similar to\nsctp_fwdtsn_skip.",
  "id": "GHSA-5p9g-wpq2-jmm7",
  "modified": "2025-09-18T15:30:33Z",
  "published": "2025-09-18T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53372"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32832a2caf82663870126c5186cf8f86c8b2a649"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4fbd094d4131a10d06a45d64158567052a35b3f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c9367ac5a22d71841bcd00130f9146c9b227d57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6109f5b13ce3e3e537db6f18976ec0e9118d1c6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79b28f42214a3d0d6a8c514db3602260bd5d6cb5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad831a7079c99c01e801764b53bc9997c2e9c0f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad988e9b5ff04607e624a459209e8c2d0c15fc73"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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