FKIE_CVE-2026-99021

Vulnerability from fkie_nvd - Published: 2026-10-23 13:17 - Updated: 2026-10-23 13:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: regulator: of: fill in supply names in of_regulator_bulk_get_all() of_regulator_bulk_get_all() returns an array it allocated itself, and fills in only the consumer of each entry. Every other way of getting a bulk array has the supply name set, because the caller provides it, and the core expects it to be there: regulator_bulk_enable() prints it when a supply fails to enable, so a caller that hands such an array to it dereferences uninitialised memory on that path. Copy each name into the array's own allocation, right behind the entries, so that it shares the array's lifetime and callers still have nothing extra to free. That also retires the fixed 64 byte stack buffer the names were assembled in, which is_supply_name() never bounded the copy against.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82ac8c4939bdbd064b4f54a580fbe4baf0d60e41
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3384ec2516a7cc567bd7c09029282494469b247
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e2151c29cec73f6cc70abf1c7cbc7b9b202489f5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/regulator/of_regulator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "82ac8c4939bdbd064b4f54a580fbe4baf0d60e41",
              "status": "affected",
              "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7",
              "versionType": "git"
            },
            {
              "lessThan": "a3384ec2516a7cc567bd7c09029282494469b247",
              "status": "affected",
              "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7",
              "versionType": "git"
            },
            {
              "lessThan": "e2151c29cec73f6cc70abf1c7cbc7b9b202489f5",
              "status": "affected",
              "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd5015686d898db6642e05cfa1cc4e1289631ecb",
              "versionType": "git"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.110",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/regulator/of_regulator.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "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\nregulator: of: fill in supply names in of_regulator_bulk_get_all()\n\nof_regulator_bulk_get_all() returns an array it allocated itself, and\nfills in only the consumer of each entry. Every other way of getting a\nbulk array has the supply name set, because the caller provides it, and\nthe core expects it to be there: regulator_bulk_enable() prints it when\na supply fails to enable, so a caller that hands such an array to it\ndereferences uninitialised memory on that path.\n\nCopy each name into the array\u0027s own allocation, right behind the\nentries, so that it shares the array\u0027s lifetime and callers still have\nnothing extra to free. That also retires the fixed 64 byte stack buffer\nthe names were assembled in, which is_supply_name() never bounded the\ncopy against."
    }
  ],
  "id": "CVE-2026-99021",
  "lastModified": "2026-10-23T13:17:25.013",
  "metrics": {},
  "published": "2026-10-23T13:17:25.013",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/82ac8c4939bdbd064b4f54a580fbe4baf0d60e41"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a3384ec2516a7cc567bd7c09029282494469b247"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e2151c29cec73f6cc70abf1c7cbc7b9b202489f5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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