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power: supply: cpcap-battery: Fix missing nvmem_device_put() causing reference leak

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.

Affected products

Linux
  • <5.18
  • <fc65520fe0781a1ff46631f111e07b4a1c677b96
  • <deaf6b3f8187231ad8f7770b10ed0be2cd47e9b2
  • =<6.6.*
  • =<*
  • <a3d81de441233a92ec21469cd0c4eb3c26b95cd8
  • <a2c14ff63e0e02e3c832385e523e9cc81301171c
  • <700c225d829a1256b59053c34a1a9d1a6ab70b09
  • ==5.18
  • =<6.18.*
  • =<6.12.*
  • =<7.1.*
  • <b56a5cbf8f1f1a5740f1137c89b14d0373309d8d
  • =<6.1.*