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CVE-2023-53680

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL OPDESC() simply indexes into nfsd4_ops[] by the op's operation number, without range checking that value. It assumes callers are careful to avoid calling it with an out-of-bounds opnum value. nfsd4_decode_compound() is not so careful, and can invoke OPDESC() with opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end of nfsd4_ops[].

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-07 16:15:52.160000
Last modified
2026-10-28 20:10:00.163000
View original CVE JSON 
{
  "id": "CVE-2023-53680",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-07T16:15:52.160",
  "lastModified": "2026-10-28T20:10:00.163",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL\n\nOPDESC() simply indexes into nfsd4_ops[] by the op's operation\nnumber, without range checking that value. It assumes callers are\ncareful to avoid calling it with an out-of-bounds opnum value.\n\nnfsd4_decode_compound() is not so careful, and can invoke OPDESC()\nwith opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end\nof nfsd4_ops[]."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nNFSD: Evitar llamar a OPDESC() con ops -> opnum == OP_ILLEGAL\n\nOPDESC() simplemente indexa en nfsd4_ops[] por el número de operación de la op, sin comprobar el rango de ese valor. Asume que los llamadores son cuidadosos para evitar llamarla con un valor de opnum fuera de límites.\n\nnfsd4_decode_compound() no es tan cuidadosa, y puede invocar a OPDESC() con opnum establecido en OP_ILLEGAL, que es 10044 -- mucho más allá del final de nfsd4_ops[]."
    }
  ],
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            },
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              "version": "6.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
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    }
  ],
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          "role": "CISA Coordinator",
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          "value": "CWE-787"
        }
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}