CVE-2025-38693 (GCVE-0-2025-38693)

Vulnerability from cvelistv5 – Published: 2025-09-04 15:32 – Updated: 2026-05-12 12:05
VLAI
Title
media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar
Summary
In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar In w7090p_tuner_write_serpar, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6856 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < 7a41ecfc3415ebe3b4c44f96b3337691dcf431a3 (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < b3d77a3fc71c084575d3df4ec6544b3fb6ce587d (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < 17b30e5ded062bd74f8ca6f317e1d415a8680665 (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < 454a443eaa792c8865c861a282fe6d4f596abc3a (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < 6bbaec6a036940e22318f0454b50b8000845ab59 (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < f98132a59ccc59a8b97987363bc99c8968934756 (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < 99690a494d91a0dc86cebd628da4c62c40552bcb (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < 39b06b93f24dff923c4183d564ed28c039150554 (git)
Affected: 713d54a8bd812229410a1902cd9b332a2a27af9f , < ed0234c8458b3149f15e496b48a1c9874dd24a1b (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.39
Unaffected: 0 , < 2.6.39 (semver)
Unaffected: 5.4.297 , ≤ 5.4.* (semver)
Unaffected: 5.10.241 , ≤ 5.10.* (semver)
Unaffected: 5.15.190 , ≤ 5.15.* (semver)
Unaffected: 6.1.149 , ≤ 6.1.* (semver)
Unaffected: 6.6.103 , ≤ 6.6.* (semver)
Unaffected: 6.12.43 , ≤ 6.12.* (semver)
Unaffected: 6.15.11 , ≤ 6.15.* (semver)
Unaffected: 6.16.2 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC CN 4100 Affected: 0 , < V5.0 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BC242347-F722-43AE-B910-BE0B22386977",
                    "versionEndExcluding": "6.15.11",
                    "versionStartIncluding": "6.13",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899",
                    "versionEndExcluding": "6.16.2",
                    "versionStartIncluding": "6.16",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar\n\nIn w7090p_tuner_write_serpar, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add\ncheck on msg[0].len to prevent crash.\n\nSimilar commit: commit 0ed554fd769a (\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmedia: dvb-frontends: w7090p: corregir desreferencia de puntero nulo en w7090p_tuner_write_serpar y w7090p_tuner_read_serpar\n\nEn w7090p_tuner_write_serpar, msg es controlado por el usuario. Cuando msg[0].buf es nulo y msg[0].len es cero, las comprobaciones anteriores en msg[0].buf se pasar\u00edan. Si se accede a msg[0].buf[2] sin una comprobaci\u00f3n de cordura, ocurrir\u00eda una desreferencia de puntero nulo. A\u00f1adimos una comprobaci\u00f3n en msg[0].len para evitar un fallo.\n\nCommit similar: commit 0ed554fd769a (\u0027media: dvb-usb: az6027: corregir desreferencia de puntero nulo en az6027_i2c_xfer()\u0027)"
          }
        ],
        "id": "CVE-2025-38693",
        "lastModified": "2026-10-19T21:10:00.160",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-09-04T16:15:37.593",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/17b30e5ded062bd74f8ca6f317e1d415a8680665"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/39b06b93f24dff923c4183d564ed28c039150554"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/454a443eaa792c8865c861a282fe6d4f596abc3a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6bbaec6a036940e22318f0454b50b8000845ab59"
          },
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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            "url": "https://git.kernel.org/stable/c/7a41ecfc3415ebe3b4c44f96b3337691dcf431a3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/99690a494d91a0dc86cebd628da4c62c40552bcb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b3d77a3fc71c084575d3df4ec6544b3fb6ce587d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f98132a59ccc59a8b97987363bc99c8968934756"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:18:45+00:00",
      "cve": "CVE-2025-38693",
      "id": "CVE-2025-38693",
      "initial_release_date": "2025-09-04T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38693.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-15T16:35:58Z",
      "cve": "CVE-2025-38693",
      "id": "CVE-2025-38693",
      "initial_release_date": "2025-09-04T23:23:58Z",
      "product_status:known_affected": "658",
      "product_status:known_not_affected": "9",
      "product_status:recommended": "495",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38693",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2025-38693.json",
      "version": "67"
    }
  }
}



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