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CVE-2023-53603

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Avoid fcport pointer dereference Klocwork reported warning of NULL pointer may be dereferenced. The routine exits when sa_ctl is NULL and fcport is allocated after the exit call thus causing NULL fcport pointer to dereference at the time of exit. To avoid fcport pointer dereference, exit the routine when sa_ctl is NULL.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-04 16:15:56.940000
Last modified
2026-11-05 21:17:28.243000
View original CVE JSON
{
  "id": "CVE-2023-53603",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-04T16:15:56.940",
  "lastModified": "2026-11-05T21:17:28.243",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid fcport pointer dereference\n\nKlocwork reported warning of NULL pointer may be dereferenced.  The routine\nexits when sa_ctl is NULL and fcport is allocated after the exit call thus\ncausing NULL fcport pointer to dereference at the time of exit.\n\nTo avoid fcport pointer dereference, exit the routine when sa_ctl is NULL."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_edif.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "7b2fbfa4b2cd3a24c1760b85d842e928070d4744",
              "lessThan": "4406fe8a96a946c7ea5724ee59625755a1d9c59d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09",
              "lessThan": "477bc74ad1add644b606bff6ba1284943c42818a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09",
              "lessThan": "7bbeff613ec0560fb2f6f8b405288f3f043adf64",
              "versionType": "git",
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              "versionType": "git",
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              "status": "affected"
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            {
              "version": "d2deafaef0330a863b5e046c1154b605588d19f7",
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            {
              "version": "5.15.61",
              "lessThan": "5.15.121",
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              "status": "affected"
            },
            {
              "version": "5.18.18",
              "lessThan": "5.19",
              "versionType": "semver",
              "status": "affected"
            },
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              "version": "5.19.2",
              "lessThan": "5.20",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_edif.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.121",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.40",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.4.5",
              "lessThanOrEqual": "6.4.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.5",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-05T20:25:10.871680Z",
          "id": "CVE-2023-53603",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
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            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.15.61",
              "versionEndExcluding": "5.15.121",
              "matchCriteriaId": "F045C76B-2E45-4D4E-A708-952BE9DAAFE8"
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.18.18",
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              "versionStartIncluding": "5.19.2",
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4406fe8a96a946c7ea5724ee59625755a1d9c59d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}