{"id":"CVE-2026-98665","summary":"iio: health: max30102: fix NULL dereference in interrupt handler","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: health: max30102: fix NULL dereference in interrupt handler\n\nThe interrupt is requested in max30102_probe() and stays enabled\nfor the lifetime of the device, but indio_dev-\u003eactive_scan_mask is only\nvalid while a buffer is enabled. When an interrupt arrives while no\nbuffer is enabled, the handler dereferences the NULL active_scan_mask:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n  Call trace:\n   __bitmap_weight+0x64/0x98 (P)\n   max30102_interrupt_handler+0x48/0x160 [max30102]\n\nCall max30102_fifo_count() at the top of the handler and return early\nunless it reports a FIFO sample is ready. Because FIFO_RDY is the only\ninterrupt source enabled in max30102_chip_init(), an invocation of\nmax30102_interrupt_handler() without the FIFO_RDY interrupt status bit\nset carries no data to read and can return before touching\nactive_scan_mask. A negative return from max30102_fifo_count()\nindicates a failed interrupt status read and is treated the same way.","modified":"2026-10-19T02:47:04.956484561Z","published":"2026-10-18T15:44:35.323Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98665.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/60699102827fdb51f9591414165359c8e867f302"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8d6f98972fe2bd6f73f39d982af0c85d766a1503"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eeb23ba97bd8016e815ef70300b8d34a0a316b90"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f0ea4824deebf21dacfbe397c4b0a5fd3e745a8d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98665.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98665"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"90579b69e94bf11ea0745ff003e82a6ce9725f96"},{"fixed":"eeb23ba97bd8016e815ef70300b8d34a0a316b90"},{"fixed":"60699102827fdb51f9591414165359c8e867f302"},{"fixed":"8d6f98972fe2bd6f73f39d982af0c85d766a1503"},{"fixed":"f0ea4824deebf21dacfbe397c4b0a5fd3e745a8d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98665.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.16.0"},{"fixed":"6.12.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.56"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98665.json"}}],"schema_version":"1.9.0"}