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CVE-2026-72214
power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak
Overview
Description

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.

Details
INFO

Published Date :

Aug. 15, 2026, 6:21 a.m.

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72214 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Address reference leaks by ensuring nvmem_device_put is called on all relevant code paths.
  • Apply the kernel patch for cpcap-battery.
  • Ensure nvmem_device_put is called.
  • Verify reference counts are managed correctly.
  • Update the Linux kernel to a patched version.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72214.

URL Resource
https://git.kernel.org/stable/c/700c225d829a1256b59053c34a1a9d1a6ab70b09
https://git.kernel.org/stable/c/a2c14ff63e0e02e3c832385e523e9cc81301171c
https://git.kernel.org/stable/c/a3d81de441233a92ec21469cd0c4eb3c26b95cd8
https://git.kernel.org/stable/c/b56a5cbf8f1f1a5740f1137c89b14d0373309d8d
https://git.kernel.org/stable/c/deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2
https://git.kernel.org/stable/c/fc65520fe0781a1ff46631f111e07b4a1c677b96
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72214 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72214 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72214 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72214 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'fc65520fe0781a1ff46631f111e07b4a1c677b96', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': '700c225d829a1256b59053c34a1a9d1a6ab70b09', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'a3d81de441233a92ec21469cd0c4eb3c26b95cd8', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'b56a5cbf8f1f1a5740f1137c89b14d0373309d8d', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'a2c14ff63e0e02e3c832385e523e9cc81301171c', 'versionType': 'git'}], 'programFiles': ['drivers/power/supply/cpcap-battery.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/power/supply/cpcap-battery.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'fc65520fe0781a1ff46631f111e07b4a1c677b96', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': '700c225d829a1256b59053c34a1a9d1a6ab70b09', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'a3d81de441233a92ec21469cd0c4eb3c26b95cd8', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'b56a5cbf8f1f1a5740f1137c89b14d0373309d8d', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'a2c14ff63e0e02e3c832385e523e9cc81301171c', 'versionType': 'git'}], 'programFiles': ['drivers/power/supply/cpcap-battery.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/power/supply/cpcap-battery.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'fc65520fe0781a1ff46631f111e07b4a1c677b96', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': '700c225d829a1256b59053c34a1a9d1a6ab70b09', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'a3d81de441233a92ec21469cd0c4eb3c26b95cd8', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'b56a5cbf8f1f1a5740f1137c89b14d0373309d8d', 'versionType': 'git'}, {'status': 'affected', 'version': 'fd46821e85de90fb5b7356251164af4815b6e3f6', 'lessThan': 'a2c14ff63e0e02e3c832385e523e9cc81301171c', 'versionType': 'git'}], 'programFiles': ['drivers/power/supply/cpcap-battery.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/power/supply/cpcap-battery.c'], 'defaultStatus': 'affected'}]
    Added Description 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.
    Added Reference https://git.kernel.org/stable/c/700c225d829a1256b59053c34a1a9d1a6ab70b09
    Added Reference https://git.kernel.org/stable/c/a2c14ff63e0e02e3c832385e523e9cc81301171c
    Added Reference https://git.kernel.org/stable/c/a3d81de441233a92ec21469cd0c4eb3c26b95cd8
    Added Reference https://git.kernel.org/stable/c/b56a5cbf8f1f1a5740f1137c89b14d0373309d8d
    Added Reference https://git.kernel.org/stable/c/deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2
    Added Reference https://git.kernel.org/stable/c/fc65520fe0781a1ff46631f111e07b4a1c677b96
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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