CVE-2026-46252 (GCVE-0-2026-46252)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:49 – Updated: 2026-11-06 16:13
VLAI
Title
regulator: core: fix locking in regulator_resolve_supply() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix locking in regulator_resolve_supply() error path If late enabling of a supply regulator fails in regulator_resolve_supply(), the code currently triggers a lockdep warning: WARNING: drivers/regulator/core.c:2649 at _regulator_put+0x80/0xa0, CPU#6: kworker/u32:4/596 ... Call trace: _regulator_put+0x80/0xa0 (P) regulator_resolve_supply+0x7cc/0xbe0 regulator_register_resolve_supply+0x28/0xb8 as the regulator_list_mutex must be held when calling _regulator_put(). To solve this, simply switch to using regulator_put(). While at it, we should also make sure that no concurrent access happens to our rdev while we clear out the supply pointer. Add appropriate locking to ensure that. While the code in question will be removed altogether in a follow-up commit, I believe it is still beneficial to have this corrected before removal for future reference.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 16:13 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < e77357dc2293283fc08a485b1e2e571d91d02622 (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < a8a2eab1166bc33ee38ca371cff425bdb5681e47 (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < 60747114fd2a38739130b715e7b2d40ce848f0be (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < c84860dac7af7dc3c3e3c9ae86d65e222c2f3b0c (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < 3b7fffd7a8984a1c009f668765ee7631fd6b87c8 (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < bde74af8d4466213007bdd42cc85fa72c861dea7 (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < c66e0db0f37290b53c57994f998bb55590364fd0 (git)
Affected: 36a1f1b6ddc6d1442424e29548e790633ca39c7b , < 497330b203d2c59c5ff3fa4c34d14494d7203bc3 (git)
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Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 5.10.260 , ≤ 5.10.* (semver)
Unaffected: 5.15.211 , ≤ 5.15.* (semver)
Unaffected: 6.1.177 , ≤ 6.1.* (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.37 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nregulator: core: corregir el bloqueo en la ruta de error de regulator_resolve_supply()\n\nSi la habilitaci\u00f3n tard\u00eda de un regulador de suministro falla en regulator_resolve_supply(), el c\u00f3digo actualmente activa una advertencia de lockdep:\n\nADVERTENCIA: drivers/regulator/core.c:2649 at _regulator_put+0x80/0xa0, CPU#6: kworker/u32:4/596\n...\nTraza de llamada:\n _regulator_put+0x80/0xa0 (P)\n regulator_resolve_supply+0x7cc/0xbe0\n regulator_register_resolve_supply+0x28/0xb8\n\nya que el regulator_list_mutex debe mantenerse al llamar a _regulator_put().\n\nPara resolver esto, simplemente cambie a usar regulator_put().\n\nYa que estamos en ello, tambi\u00e9n deber\u00edamos asegurarnos de que no ocurra ning\u00fan acceso concurrente a nuestro rdev mientras borramos el puntero de suministro. A\u00f1ada un bloqueo apropiado para asegurar eso.\n\nAunque el c\u00f3digo en cuesti\u00f3n ser\u00e1 eliminado por completo en un commit de seguimiento, creo que sigue siendo beneficioso tener esto corregido antes de la eliminaci\u00f3n para futuras referencias."
          }
        ],
        "id": "CVE-2026-46252",
        "lastModified": "2026-11-06T17:17:53.697",
        "metrics": {
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              "cvssData": {
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                "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"
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                "role": "CISA Coordinator",
                "timestamp": "2026-11-06T16:13:03.490087Z",
                "version": "2.0.3"
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        "published": "2026-06-03T18:16:25.797",
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e77357dc2293283fc08a485b1e2e571d91d02622"
          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
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                "lang": "en",
                "value": "CWE-667"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T20:55:50+00:00",
      "cve": "CVE-2026-46252",
      "id": "CVE-2026-46252",
      "initial_release_date": "2026-06-03T00:00:00+00:00",
      "product_status:known_affected": "124",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: regulator: core: fix locking in regulator_resolve_supply() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46252.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-11-07T02:07:09Z",
      "cve": "CVE-2026-46252",
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      "initial_release_date": "2026-06-04T02:21:54Z",
      "product_status:known_affected": "647",
      "product_status:known_not_affected": "21",
      "product_status:recommended": "331",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46252",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-46252.json",
      "version": "16"
    },
    "vulnrichment": {
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          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-46252",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
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                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-11-06T16:13:03.490087Z",
                    "version": "2.0.3"
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
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              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
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              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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              "versions": [
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                  "version": "6.1.177",
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                  "status": "unaffected",
                  "version": "6.18.37",
                  "versionType": "semver"
                },
                {
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                  "status": "unaffected",
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                  "versionType": "semver"
                },
                {
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                  "status": "unaffected",
                  "version": "7.0",
                  "versionType": "original_commit_for_fix"
                }
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          "cpeApplicability": [
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                      "vulnerable": true
                    },
                    {
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          "descriptions": [
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: core: fix locking in regulator_resolve_supply() error path\n\nIf late enabling of a supply regulator fails in\nregulator_resolve_supply(), the code currently triggers a lockdep\nwarning:\n\n    WARNING: drivers/regulator/core.c:2649 at _regulator_put+0x80/0xa0, CPU#6: kworker/u32:4/596\n    ...\n    Call trace:\n     _regulator_put+0x80/0xa0 (P)\n     regulator_resolve_supply+0x7cc/0xbe0\n     regulator_register_resolve_supply+0x28/0xb8\n\nas the regulator_list_mutex must be held when calling _regulator_put().\n\nTo solve this, simply switch to using regulator_put().\n\nWhile at it, we should also make sure that no concurrent access happens\nto our rdev while we clear out the supply pointer. Add appropriate\nlocking to ensure that.\n\nWhile the code in question will be removed altogether in a follow-up\ncommit, I believe it is still beneficial to have this corrected before\nremoval for future reference."
            }
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            },
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              "url": "https://git.kernel.org/stable/c/497330b203d2c59c5ff3fa4c34d14494d7203bc3"
            }
          ],
          "title": "regulator: core: fix locking in regulator_resolve_supply() error path",
          "x_generator": {
            "engine": "bippy-1.2.0"
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      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2026-46252",
        "datePublished": "2026-06-03T15:49:48.784Z",
        "dateReserved": "2026-05-13T15:03:33.107Z",
        "dateUpdated": "2026-11-06T16:13:46.593Z",
        "state": "PUBLISHED"
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    }
  }
}



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