{"id":"CVE-2026-72214","state":"PUBLISHED","title":"power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak","description":"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’s retry logic on subsequent\nbattery property reads can compound this leak, preventing the nvmem\ndevice from ever being freed.\n\nFound by code review.","publishedAt":"2026-08-15T05:54:08.602Z","updatedAt":"2026-08-17T05:10:28.814Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"fc65520fe0781a1ff46631f111e07b4a1c677b96","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"700c225d829a1256b59053c34a1a9d1a6ab70b09","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"a3d81de441233a92ec21469cd0c4eb3c26b95cd8","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"b56a5cbf8f1f1a5740f1137c89b14d0373309d8d","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"a2c14ff63e0e02e3c832385e523e9cc81301171c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/cpcap-battery.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/cpcap-battery.c"]}],"references":["https://git.kernel.org/stable/c/fc65520fe0781a1ff46631f111e07b4a1c677b96","https://git.kernel.org/stable/c/700c225d829a1256b59053c34a1a9d1a6ab70b09","https://git.kernel.org/stable/c/deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2","https://git.kernel.org/stable/c/a3d81de441233a92ec21469cd0c4eb3c26b95cd8","https://git.kernel.org/stable/c/b56a5cbf8f1f1a5740f1137c89b14d0373309d8d","https://git.kernel.org/stable/c/a2c14ff63e0e02e3c832385e523e9cc81301171c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72214.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72214","state":"PUBLISHED","datePublished":"2026-08-15T05:54:08.602Z","dateUpdated":"2026-08-17T05:10:28.814Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.912Z"},"containers":{"cna":{"title":"power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak","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’s retry logic on subsequent\nbattery property reads can compound this leak, preventing the nvmem\ndevice from ever being freed.\n\nFound by code review."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"fc65520fe0781a1ff46631f111e07b4a1c677b96","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"700c225d829a1256b59053c34a1a9d1a6ab70b09","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"a3d81de441233a92ec21469cd0c4eb3c26b95cd8","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"b56a5cbf8f1f1a5740f1137c89b14d0373309d8d","versionType":"git"},{"version":"fd46821e85de90fb5b7356251164af4815b6e3f6","status":"affected","lessThan":"a2c14ff63e0e02e3c832385e523e9cc81301171c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/cpcap-battery.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/cpcap-battery.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/fc65520fe0781a1ff46631f111e07b4a1c677b96"},{"url":"https://git.kernel.org/stable/c/700c225d829a1256b59053c34a1a9d1a6ab70b09"},{"url":"https://git.kernel.org/stable/c/deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2"},{"url":"https://git.kernel.org/stable/c/a3d81de441233a92ec21469cd0c4eb3c26b95cd8"},{"url":"https://git.kernel.org/stable/c/b56a5cbf8f1f1a5740f1137c89b14d0373309d8d"},{"url":"https://git.kernel.org/stable/c/a2c14ff63e0e02e3c832385e523e9cc81301171c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:10:28.814Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}