{"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":"2026-09-25T18:26:58.754177769Z","published":"2026-09-11T19:45:20.758Z","related":["openSUSE-SU-2026:11880-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89623.json","cna_assigner":"Linux"},"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/85d963499f1feeea287c0a37c3eac3fc1898eca9"},{"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":"85d963499f1feeea287c0a37c3eac3fc1898eca9"},{"fixed":"0ae90a19e6b5a8557d25d95facb7e01c9c07af38"},{"fixed":"c99ba6c234d4d537c317336376b78c088174034a"},{"fixed":"2eda1513f573945c1e3a0090341f3d28740463b1"},{"fixed":"dca151633c0fde90935311c60e7cfc064aa56134"}]}],"versions":["v6.6.156","v6.6.155","v6.6.154","v6.6.153","v6.6.152","v6.6.151","v6.6.150","v6.6.149","v6.6.148","v6.6.147","v6.6.146","v6.6.145","v6.6.144","v6.6.143","v6.6.142","v6.6.141","v6.6.140","v6.6.139","v6.6.138","v6.6.137","v6.6.136","v6.6.135","v6.6.134","v6.6.133","v6.6.132","v6.6.131","v6.6.130","v6.6.129","v6.6.128","v6.6.127","v6.6.126","v6.6.125","v6.6.124","v6.6.123","v6.6.122","v6.6.121","v6.6.120","v6.6.119","v6.6.118","v6.6.117","v6.6.116","v6.6.115","v6.6.114","v6.6.113","v6.6.112","v6.6.111","v6.6.110","v6.6.109","v6.6.108","v6.6.107","v6.6.106","v6.6.105","v6.6.104","v6.6.103","v6.6.102","v6.6.101","v6.6.100","v6.6.99","v6.6.98","v6.6.97","v6.6.96","v6.6.95","v6.6.94","v6.6.93","v6.6.92","v6.6.91","v6.6.90","v6.6.89","v6.6.88","v6.6.87","v6.6.86","v6.6.85","v6.6.84","v6.6.83","v6.6.82","v6.6.81","v6.6.80","v6.6.79","v6.6.78","v6.6.77","v6.6.76","v6.6.75","v6.6.74","v6.6.73","v6.6.72","v6.6.71","v6.6.70","v6.6.69","v6.6.68","v6.6.67","v6.6.66","v6.6.65","v6.6.64","v6.6.63","v6.6.62","v6.6.61","v6.6.60","v6.6.59","v6.6.58","v6.6.57","v6.6.56","v6.6.55","v6.6.54","v6.6.53","v6.6.52","v6.6.51","v6.6.50","v6.6.49","v6.6.48","v6.6.47","v6.6.46","v6.6.45","v6.6.44","v6.6.43","v6.6.42","v6.6.41","v6.6.40","v6.6.39","v6.6.38","v6.6.37","v6.6.36","v6.6.35","v6.6.34","v6.6.33","v6.6.32","v6.6.31","v6.6.30","v6.6.29","v6.6.28","v6.6.27","v6.6.26","v6.6.25","v6.6.24","v6.6.23","v6.6.22","v6.6.21","v6.6.20","v6.6.19","v6.6.18","v6.6.17","v6.6.16","v6.6.15","v6.6.14","v6.6.13","v6.6.12","v6.6.11","v6.6.10","v6.6.9","v6.6.8"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-89623.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.8"},{"fixed":"6.6.157"},{"fixed":"6.12.109"},{"fixed":"6.18.50"},{"fixed":"7.2.4"},{"fixed":"7.3-rc1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-89623.json"}}],"schema_version":"1.9.0"}