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CVE-2026-53308

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

power: supply: max77705: Free allocated workqueue and fix removal order

Use devm interface for allocating workqueue to fix two bugs at the same time:

Change is not equivalent in the workqueue itself: use non-legacy API which does not set (__WQ_LEGACY | WQ_MEM_RECLAIM). The workqueue is used to update power supply (power_supply_changed()) status, thus there is no point to run it for memory reclaim. Note that dev_name() is not directly used in second argument to prevent possible unlikely parsing any "%" character in device name as format.

Detalles técnicos trazas, registros y código del informe original
1. Driver leaks the memory on remove(), because the workqueue is not
   destroyed.

2. Driver allocates workqueue and then registers interrupt handlers
   with devm interface.  This means that probe error paths will not use a
   reversed order, but first destroy the workqueue and then, via devm
   release handlers, free the interrupt.

   The interrupt handler schedules work on this exact workqueue, thus if
   interrupt is hit in this short time window - after destroying
   workqueue, but before devm() frees the interrupt - the schedulled
   work will lead to use of freed memory.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-53308",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "a6a494c8e3ce1fe84aac538b087a4cab868ed83f",
              "lessThan": "b98e4e57e34d099a8f846fa54749654082975ea0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6a494c8e3ce1fe84aac538b087a4cab868ed83f",
              "lessThan": "1e668baadefb16e81269dbfebf3ffc2672e3a3bb",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/power/supply/max77705_charger.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/power/supply/max77705_charger.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-06-26T20:17:24.110",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1e668baadefb16e81269dbfebf3ffc2672e3a3bb",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b98e4e57e34d099a8f846fa54749654082975ea0",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: max77705: Free allocated workqueue and fix removal order\n\nUse devm interface for allocating workqueue to fix two bugs at the same\ntime:\n\n1. Driver leaks the memory on remove(), because the workqueue is not\n   destroyed.\n\n2. Driver allocates workqueue and then registers interrupt handlers\n   with devm interface.  This means that probe error paths will not use a\n   reversed order, but first destroy the workqueue and then, via devm\n   release handlers, free the interrupt.\n\n   The interrupt handler schedules work on this exact workqueue, thus if\n   interrupt is hit in this short time window - after destroying\n   workqueue, but before devm() frees the interrupt - the schedulled\n   work will lead to use of freed memory.\n\nChange is not equivalent in the workqueue itself: use non-legacy API\nwhich does not set (__WQ_LEGACY | WQ_MEM_RECLAIM).  The workqueue is\nused to update power supply (power_supply_changed()) status, thus there\nis no point to run it for memory reclaim.  Note that dev_name() is not\ndirectly used in second argument to prevent possible unlikely parsing\nany \"%\" character in device name as format."
    }
  ],
  "lastModified": "2026-07-06T20:14:36.417",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2E6E44BD-EA5E-41E8-907D-E2A9C379B66B",
              "versionEndExcluding": "7.0.10",
              "versionStartIncluding": "6.15"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}