{"id":"CVE-2026-31732","summary":"gpio: Fix resource leaks on errors in gpiochip_add_data_with_key()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: Fix resource leaks on errors in gpiochip_add_data_with_key()\n\nSince commit aab5c6f20023 (\"gpio: set device type for GPIO chips\"),\n`gdev-\u003edev.release` is unset.  As a result, the reference count to\n`gdev-\u003edev` isn't dropped on the error handling paths.\n\nDrop the reference on errors.\n\nAlso reorder the instructions to make the error handling simpler.\nNow gpiochip_add_data_with_key() roughly looks like:\n\n   \u003e\u003e\u003e Some memory allocation.  Go to ERR ZONE 1 on errors.\n   \u003e\u003e\u003e device_initialize().\n\n   gpiodev_release() takes over the responsibility for freeing the\n   resources of `gdev-\u003edev`.  The subsequent error handling paths\n   shouldn't go through ERR ZONE 1 again which leads to double free.\n\n   \u003e\u003e\u003e Some initialization mainly on `gdev`.\n   \u003e\u003e\u003e The rest of initialization.  Go to ERR ZONE 2 on errors.\n   \u003e\u003e\u003e Chip registration success and exit.\n\n   \u003e\u003e\u003e ERR ZONE 2.  gpio_device_put() and exit.\n   \u003e\u003e\u003e ERR ZONE 1.","modified":"2026-07-15T01:48:59.635871585Z","published":"2026-05-01T14:14:30.844Z","related":["CGA-9gpq-8rrx-233r"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31732.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/16fdabe143fce2cbf89139677728e17e21b46c28"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a500e1837c4266ddb05b39b3e1cc71f49a43ffa5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f0cf9c7b7c281956cc0dec163132cd96f76e1d60"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fb4584d2b324c522404c733c65840a1a6519ada8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31732.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31732"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"aab5c6f200238ac45001bec3d5494fff8438a8dc"},{"fixed":"a500e1837c4266ddb05b39b3e1cc71f49a43ffa5"},{"fixed":"f0cf9c7b7c281956cc0dec163132cd96f76e1d60"},{"fixed":"fb4584d2b324c522404c733c65840a1a6519ada8"},{"fixed":"16fdabe143fce2cbf89139677728e17e21b46c28"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31732.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.9.0"},{"fixed":"6.12.95"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.22"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31732.json"}}],"schema_version":"1.7.5"}