GHSA-G7XJ-PF5G-99J9
Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-21 15:41In the Linux kernel, the following vulnerability has been resolved:
iio: health: max30102: fix NULL dereference in interrupt handler
The interrupt is requested in max30102_probe() and stays enabled for the lifetime of the device, but indio_dev->active_scan_mask is only valid while a buffer is enabled. When an interrupt arrives while no buffer is enabled, the handler dereferences the NULL active_scan_mask:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Call trace: __bitmap_weight+0x64/0x98 (P) max30102_interrupt_handler+0x48/0x160 [max30102]
Call max30102_fifo_count() at the top of the handler and return early unless it reports a FIFO sample is ready. Because FIFO_RDY is the only interrupt source enabled in max30102_chip_init(), an invocation of max30102_interrupt_handler() without the FIFO_RDY interrupt status bit set carries no data to read and can return before touching active_scan_mask. A negative return from max30102_fifo_count() indicates a failed interrupt status read and is treated the same way.
{
"affected": [],
"aliases": [
"CVE-2026-98665"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-18T16:17:19Z",
"severity": null
},
"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.",
"id": "GHSA-g7xj-pf5g-99j9",
"modified": "2026-10-21T15:41:50Z",
"published": "2026-10-18T18:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98665"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a74f30a7bb305cdc5c3e3e9239b32bb84f3529f"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": []
}
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