{"id":"CVE-2026-89623","summary":"HID: mcp2221: stop device IO before hid_hw_stop","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: mcp2221: stop device IO before hid_hw_stop\n\nQuiesce device IO at the start of the devm cleanup callback\nmcp2221_hid_unregister() so that incoming HID reports cannot race with\nhardware teardown during probe failure or device removal, addressing a\npotential use-after-free.\n\nGuard the call to hid_device_io_stop() with io_started. On normal\nremoval hid_device_remove() has already cleared io_started before the\ndevres group is released, so an unconditional call would otherwise hit\nthe !io_started path and emit a spurious \"io already stopped\" warning\non every removal. The guard preserves the probe-failure balancing,\nwhere io_started is still set after hid_device_io_start(), while\nstaying silent on the normal removal path.","modified":"2026-09-13T03:47:19.636136699Z","published":"2026-09-11T19:45:20.758Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89623.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89623.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89623"},{"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":"d4b50ac06ea6e47bdd2b04e97d1090c673c80645"},{"fixed":"0ae90a19e6b5a8557d25d95facb7e01c9c07af38"},{"fixed":"c99ba6c234d4d537c317336376b78c088174034a"},{"fixed":"2eda1513f573945c1e3a0090341f3d28740463b1"},{"fixed":"dca151633c0fde90935311c60e7cfc064aa56134"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89623.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.8"},{"fixed":"6.12.109"},{"fixed":"6.18.50"},{"fixed":"7.2.4"},{"fixed":"7.3-rc1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89623.json"}}],"schema_version":"1.9.0"}