CVE-2025-40015 (GCVE-0-2025-40015)

Vulnerability from cvelistv5 – Published: 2025-10-20 15:29 – Updated: 2026-05-11 21:40
VLAI
Title
media: stm32-csi: Fix dereference before NULL check
Summary
In the Linux kernel, the following vulnerability has been resolved: media: stm32-csi: Fix dereference before NULL check In 'stm32_csi_start', 'csidev->s_subdev' is dereferenced directly while assigning a value to the 'src_pad'. However the same value is being checked against NULL at a later point of time indicating that there are chances that the value can be NULL. Move the dereference after the NULL check.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e7bad98c205d17c745de9d83ebf73e53cbf99d48 , < 1f053d82e59c785b2b939cbed12f13657f84b296 (git)
Affected: e7bad98c205d17c745de9d83ebf73e53cbf99d48 , < 4eeafff163e80d576c5efc1360ae310c0ceedd02 (git)
Affected: e7bad98c205d17c745de9d83ebf73e53cbf99d48 , < 80eaf32672871bd2623ce6ba13ffc1f018756580 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.16.11 , ≤ 6.16.* (semver)
Unaffected: 6.17.1 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/st/stm32/stm32-csi.c"
          ],
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          "versions": [
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "6.17.1",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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                  "vulnerable": true
                },
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                  "versionEndExcluding": "6.17.1",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32-csi: Fix dereference before NULL check\n\nIn \u0027stm32_csi_start\u0027, \u0027csidev-\u003es_subdev\u0027 is dereferenced directly while\nassigning a value to the \u0027src_pad\u0027. However the same value is being\nchecked against NULL at a later point of time indicating that there\nare chances that the value can be NULL.\n\nMove the dereference after the NULL check."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:40:49.933Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/1f053d82e59c785b2b939cbed12f13657f84b296"
        },
        {
          "url": "https://git.kernel.org/stable/c/4eeafff163e80d576c5efc1360ae310c0ceedd02"
        },
        {
          "url": "https://git.kernel.org/stable/c/80eaf32672871bd2623ce6ba13ffc1f018756580"
        }
      ],
      "title": "media: stm32-csi: Fix dereference before NULL check",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40015",
    "datePublished": "2025-10-20T15:29:09.728Z",
    "dateReserved": "2025-04-16T07:20:57.151Z",
    "dateUpdated": "2026-05-11T21:40:49.933Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-10-22",
      "epss": "0.00235",
      "percentile": "0.13604"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/media/platform/st/stm32/stm32-csi.c"
                ],
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                "vendor": "Linux",
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                    "versionType": "git"
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                  {
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                    "versionType": "git"
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                "product": "Linux",
                "programFiles": [
                  "drivers/media/platform/st/stm32/stm32-csi.c"
                ],
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                "vendor": "Linux",
                "versions": [
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                    "versionType": "semver"
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                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32-csi: Fix dereference before NULL check\n\nIn \u0027stm32_csi_start\u0027, \u0027csidev-\u003es_subdev\u0027 is dereferenced directly while\nassigning a value to the \u0027src_pad\u0027. However the same value is being\nchecked against NULL at a later point of time indicating that there\nare chances that the value can be NULL.\n\nMove the dereference after the NULL check."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmedia: stm32-csi: Corregir desreferencia antes de la comprobaci\u00f3n de NULL\n\nEn \u0027stm32_csi_start\u0027, \u0027csidev-\u003es_subdev\u0027 es desreferenciado directamente mientras\nse asigna un valor a \u0027src_pad\u0027. Sin embargo, el mismo valor se comprueba\ncontra NULL en un momento posterior, lo que indica que existen posibilidades\nde que el valor sea NULL.\n\nMover la desreferencia despu\u00e9s de la comprobaci\u00f3n de NULL."
          }
        ],
        "id": "CVE-2025-40015",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {},
        "published": "2025-10-20T16:15:38.250",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1f053d82e59c785b2b939cbed12f13657f84b296"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4eeafff163e80d576c5efc1360ae310c0ceedd02"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/80eaf32672871bd2623ce6ba13ffc1f018756580"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:24:30+00:00",
      "cve": "CVE-2025-40015",
      "id": "CVE-2025-40015",
      "initial_release_date": "2025-10-20T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: stm32-csi: Fix dereference before NULL check",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40015.json",
      "version": "3"
    }
  }
}



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