{"id":"CVE-2026-64602","summary":"iio: adc: spear: Initialize completion before requesting IRQ","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: spear: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"spear_adc_probe() in drivers/iio/adc/spear_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst-\u003ecompletion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in spear_adc_probe():\n\n    iodev = devm_iio_device_alloc(&pdev-\u003edev, sizeof(*st)); /* st kzalloc-zeroed */\n    ...\n    retval = devm_request_irq(&pdev-\u003edev, irq, spear_adc_isr, 0,\n                              LPC32XXAD_NAME, st);           /* register handler */\n    ...\n    init_completion(&st-\u003ecompletion);                       /* initialize completion */\n\nspear_adc_isr() calls complete():\n\n    complete(&st-\u003ecompletion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq().","modified":"2026-08-12T03:51:48.126755929Z","published":"2026-08-06T07:13:54.519Z","related":["openSUSE-SU-2026:11476-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64602.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/37077d8271b1f24894fbc21bca1c4cd337525d31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ee2128b6f0eb0be7b6cb8f6e0f1f113a65201a0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67a49ab41320b3f721ce4be7447754ff040acbd5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a50757398794aaa25f908b96c6733e045466cba4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aea8ae6c4d3ed58d9223360f758df6bd8b90c608"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bbfebae473ac2c8a194523b29ccb9b45f02f134c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eb5b07c9d0ec1a9d4b6871b14793c19967d79dc4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f3f90bc7b38ba3ff14f131cea0f8eb77624787a8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64602.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64602"},{"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":"b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed"},{"fixed":"aea8ae6c4d3ed58d9223360f758df6bd8b90c608"},{"fixed":"67a49ab41320b3f721ce4be7447754ff040acbd5"},{"fixed":"a50757398794aaa25f908b96c6733e045466cba4"},{"fixed":"f3f90bc7b38ba3ff14f131cea0f8eb77624787a8"},{"fixed":"37077d8271b1f24894fbc21bca1c4cd337525d31"},{"fixed":"bbfebae473ac2c8a194523b29ccb9b45f02f134c"},{"fixed":"eb5b07c9d0ec1a9d4b6871b14793c19967d79dc4"},{"fixed":"3ee2128b6f0eb0be7b6cb8f6e0f1f113a65201a0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64602.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.16.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.96"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.39"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64602.json"}}],"schema_version":"1.9.0"}