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FKIE_CVE-2026-72214

Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-17 06:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak In cpcap_battery_detect_battery_type(), the reference to an nvmem device obtained via nvmem_device_find() is not released with nvmem_device_put() on the success or read-failure paths, causing a permanent reference leak. The driver’s retry logic on subsequent battery property reads can compound this leak, preventing the nvmem device from ever being freed. Found by code review.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/700c225d829a1256b59053c34a1a9d1a6ab70b09
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a2c14ff63e0e02e3c832385e523e9cc81301171c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3d81de441233a92ec21469cd0c4eb3c26b95cd8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b56a5cbf8f1f1a5740f1137c89b14d0373309d8d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc65520fe0781a1ff46631f111e07b4a1c677b96
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/cpcap-battery.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fc65520fe0781a1ff46631f111e07b4a1c677b96",
              "status": "affected",
              "version": "fd46821e85de90fb5b7356251164af4815b6e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "700c225d829a1256b59053c34a1a9d1a6ab70b09",
              "status": "affected",
              "version": "fd46821e85de90fb5b7356251164af4815b6e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2",
              "status": "affected",
              "version": "fd46821e85de90fb5b7356251164af4815b6e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "a3d81de441233a92ec21469cd0c4eb3c26b95cd8",
              "status": "affected",
              "version": "fd46821e85de90fb5b7356251164af4815b6e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "b56a5cbf8f1f1a5740f1137c89b14d0373309d8d",
              "status": "affected",
              "version": "fd46821e85de90fb5b7356251164af4815b6e3f6",
              "versionType": "git"
            },
            {
              "lessThan": "a2c14ff63e0e02e3c832385e523e9cc81301171c",
              "status": "affected",
              "version": "fd46821e85de90fb5b7356251164af4815b6e3f6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/power/supply/cpcap-battery.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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\npower: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak\n\nIn cpcap_battery_detect_battery_type(), the reference to an nvmem\ndevice obtained via nvmem_device_find() is not released with\nnvmem_device_put() on the success or read-failure paths, causing a\npermanent reference leak. The driver\u2019s retry logic on subsequent\nbattery property reads can compound this leak, preventing the nvmem\ndevice from ever being freed.\n\nFound by code review."
    }
  ],
  "id": "CVE-2026-72214",
  "lastModified": "2026-08-17T06:18:22.370",
  "metrics": {},
  "published": "2026-08-15T06:21:40.130",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/700c225d829a1256b59053c34a1a9d1a6ab70b09"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a2c14ff63e0e02e3c832385e523e9cc81301171c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a3d81de441233a92ec21469cd0c4eb3c26b95cd8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b56a5cbf8f1f1a5740f1137c89b14d0373309d8d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc65520fe0781a1ff46631f111e07b4a1c677b96"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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