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CVE-2023-53654

Estado: AnalizadaMedia (5.5)—

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

octeontx2-af: Add validation before accessing cgx and lmac

with the addition of new MAC blocks like CN10K RPM and CN10KB RPM_USX, LMACs are noncontiguous and CGX blocks are also noncontiguous. But during RVU driver initialization, the driver is assuming they are contiguous and trying to access cgx or lmac with their id which is resulting in kernel panic.

This patch fixes the issue by adding proper checks.

Detalles técnicos trazas, registros y código del informe original
[   23.219150] pc : cgx_lmac_read+0x38/0x70
[   23.219154] lr : rvu_program_channels+0x3f0/0x498
[   23.223852] sp : ffff000100d6fc80
[   23.227158] x29: ffff000100d6fc80 x28: ffff00010009f880 x27:
000000000000005a
[   23.234288] x26: ffff000102586768 x25: 0000000000002500 x24:
fffffffffff0f000

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-53654",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
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      "affectedData": [
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "versionType": "git"
            },
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              "lessThan": "a5485a943193e55c79150382e6461e8ea759e96e",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "b04872e15f3df62cb2fd530950f769626e1ef489",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "79ebb53772c95d3a6ae51b3c65f9985fdd430df6",
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            }
          ],
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/cgx.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.12",
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            },
            {
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              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/cgx.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-07T16:15:48.973",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/79ebb53772c95d3a6ae51b3c65f9985fdd430df6",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a5485a943193e55c79150382e6461e8ea759e96e",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
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      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: Add validation before accessing cgx and lmac\n\nwith the addition of new MAC blocks like CN10K RPM and CN10KB\nRPM_USX, LMACs are noncontiguous and CGX blocks are also\nnoncontiguous. But during RVU driver initialization, the driver\nis assuming they are contiguous and trying to access\ncgx or lmac with their id which is resulting in kernel panic.\n\nThis patch fixes the issue by adding proper checks.\n\n[   23.219150] pc : cgx_lmac_read+0x38/0x70\n[   23.219154] lr : rvu_program_channels+0x3f0/0x498\n[   23.223852] sp : ffff000100d6fc80\n[   23.227158] x29: ffff000100d6fc80 x28: ffff00010009f880 x27:\n000000000000005a\n[   23.234288] x26: ffff000102586768 x25: 0000000000002500 x24:\nfffffffffff0f000"
    }
  ],
  "lastModified": "2026-06-17T06:45:48.323",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "12A35540-7F02-46C0-AC75-C86AFEB67980",
              "versionEndExcluding": "5.15.121",
              "versionStartIncluding": "5.12"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9BD1D4A1-304D-4187-8178-6D7C0050B1AF",
              "versionEndExcluding": "6.1.39",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A91BC267-63EE-413E-A6EF-6B96C2A278D1",
              "versionEndExcluding": "6.4.4",
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}