{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3587914bf61df7924933530353d840378cdc4973"
            },
            {
              "fixed": "6258bfec51e894ea97b8e69f3cde7af269b37de9"
            },
            {
              "fixed": "944082fdb0284a31c0b37a88c8a1d4404da3a6d9"
            },
            {
              "fixed": "a72f8e51d6ee66c255a8a93a4421b8a538d112a8"
            },
            {
              "fixed": "f9bbd943c34a9ad60e593a4b99ce2394e4e2381b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.11.0"
            },
            {
              "fixed": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63936.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: mt6359: fix unchecked return value in mt6358_read_imp\n\nIn mt6358_read_imp(), the variable val_v is passed to regmap_read()\nbut the return value is not checked. If the read fails, val_v remains\nuninitialized and its random stack content is subsequently reported\nas a measurement result.\n\nInitialize val_v to zero to ensure a predictable value is reported\nin case of bus failure and to prevent potential stack data leakage.\nThis also satisfies static analyzers that might otherwise flag the\nvariable as used uninitialized.",
  "id": "CVE-2026-63936",
  "modified": "2026-07-21T03:42:04.118945662Z",
  "published": "2026-07-19T14:55:33.942Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6258bfec51e894ea97b8e69f3cde7af269b37de9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/944082fdb0284a31c0b37a88c8a1d4404da3a6d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a72f8e51d6ee66c255a8a93a4421b8a538d112a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9bbd943c34a9ad60e593a4b99ce2394e4e2381b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63936.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63936"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "iio: adc: mt6359: fix unchecked return value in mt6358_read_imp"
}