{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b87b0c0f81e8d11c881b726b886b7502ab67d884"
            },
            {
              "fixed": "bac0ed8bee651aa841375edf72c6ab1d10ac80c6"
            },
            {
              "fixed": "9263b9ad968a563337a60e0eb66e35186e1faf9a"
            },
            {
              "fixed": "1d3a7d7dd3adee19e00be2b2237140f0fe169484"
            },
            {
              "fixed": "f5acb824277a97a5210c454872202bf7f08c75d4"
            },
            {
              "fixed": "ae18d2d2ef27a4d04fda6e30c23774513dc9be1e"
            },
            {
              "fixed": "08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9"
            },
            {
              "fixed": "9fe22f563b2a0fdb11fd3711a8c39c023629c08a"
            },
            {
              "fixed": "a130404ce0b69ca1438126bd81c1985d3b4d2e6f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89936.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: dac: m62332: Fix regulator reference count imbalance\n\nm62332_set_value() enables the Vcc regulator on every write of a\nnon-zero value and disables it on every write of zero, without tracking\nthe channel's current state. Because the regulator is reference counted,\nchanging a channel directly from one non-zero value to another enables\nit more than once, while a later write of zero disables it only once.\nThe reference count never returns to zero and the regulator is left\nenabled indefinitely.\n\nOnly enable the regulator on the transition from zero to non-zero, and\nonly disable it on the transition from non-zero to zero, using the\npreviously stored channel value to detect the edge. Balance the\nregulator on the I2C error path so the reference count stays consistent\nif the write fails.",
  "id": "CVE-2026-89936",
  "modified": "2026-09-18T03:30:55.275782216Z",
  "published": "2026-09-16T10:32:25.608Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d3a7d7dd3adee19e00be2b2237140f0fe169484"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9263b9ad968a563337a60e0eb66e35186e1faf9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fe22f563b2a0fdb11fd3711a8c39c023629c08a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a130404ce0b69ca1438126bd81c1985d3b4d2e6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae18d2d2ef27a4d04fda6e30c23774513dc9be1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bac0ed8bee651aa841375edf72c6ab1d10ac80c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5acb824277a97a5210c454872202bf7f08c75d4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89936.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89936"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "iio: dac: m62332: Fix regulator reference count imbalance"
}