CVE-2023-53372 (GCVE-0-2023-53372)

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-05-11 19:43
VLAI?
Title
sctp: fix a potential overflow in sctp_ifwdtsn_skip
Summary
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.
CWE
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < 4fbd094d4131a10d06a45d64158567052a35b3f4 (git)
Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < ad831a7079c99c01e801764b53bc9997c2e9c0f7 (git)
Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < 79b28f42214a3d0d6a8c514db3602260bd5d6cb5 (git)
Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < 6109f5b13ce3e3e537db6f18976ec0e9118d1c6f (git)
Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < 5c9367ac5a22d71841bcd00130f9146c9b227d57 (git)
Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < ad988e9b5ff04607e624a459209e8c2d0c15fc73 (git)
Affected: 0fc2ea922c8ad5520c80f03facbf396c81dce802 , < 32832a2caf82663870126c5186cf8f86c8b2a649 (git)
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    Linux Linux Affected: 4.16
Unaffected: 0 , < 4.16 (semver)
Unaffected: 4.19.281 , ≤ 4.19.* (semver)
Unaffected: 5.4.241 , ≤ 5.4.* (semver)
Unaffected: 5.10.178 , ≤ 5.10.* (semver)
Unaffected: 5.15.108 , ≤ 5.15.* (semver)
Unaffected: 6.1.25 , ≤ 6.1.* (semver)
Unaffected: 6.2.12 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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              "attackComplexity": "LOW",
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              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
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                "timestamp": "2026-01-14T18:53:52.812844Z",
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              "version": "0",
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              "lessThanOrEqual": "4.19.*",
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              "lessThanOrEqual": "5.4.*",
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              "lessThanOrEqual": "*",
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      ],
      "cpeApplicability": [
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          "lang": "en",
          "value": "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:43:40.624Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        }
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      "title": "sctp: fix a potential overflow in sctp_ifwdtsn_skip",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53372",
    "datePublished": "2025-09-18T13:33:19.549Z",
    "dateReserved": "2025-09-17T14:54:09.734Z",
    "dateUpdated": "2026-05-11T19:43:40.624Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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