{"id":"CVE-2026-89623","state":"PUBLISHED","title":"HID: mcp2221: stop device IO before hid_hw_stop","description":"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.","publishedAt":"2026-09-11T19:45:20.758Z","updatedAt":"2026-10-24T14:14:00.813Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d4b50ac06ea6e47bdd2b04e97d1090c673c80645","status":"affected","lessThan":"85d963499f1feeea287c0a37c3eac3fc1898eca9","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"0ae90a19e6b5a8557d25d95facb7e01c9c07af38","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"c99ba6c234d4d537c317336376b78c088174034a","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"2eda1513f573945c1e3a0090341f3d28740463b1","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"dca151633c0fde90935311c60e7cfc064aa56134","versionType":"git"},{"version":"6.6.8","status":"affected","lessThan":"6.6.157","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-mcp2221.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-mcp2221.c"]}],"references":["https://git.kernel.org/stable/c/85d963499f1feeea287c0a37c3eac3fc1898eca9","https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38","https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a","https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1","https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89623.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89623","state":"PUBLISHED","datePublished":"2026-09-11T19:45:20.758Z","dateUpdated":"2026-10-24T14:14:00.813Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.737Z"},"containers":{"cna":{"title":"HID: mcp2221: stop device IO before hid_hw_stop","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d4b50ac06ea6e47bdd2b04e97d1090c673c80645","status":"affected","lessThan":"85d963499f1feeea287c0a37c3eac3fc1898eca9","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"0ae90a19e6b5a8557d25d95facb7e01c9c07af38","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"c99ba6c234d4d537c317336376b78c088174034a","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"2eda1513f573945c1e3a0090341f3d28740463b1","versionType":"git"},{"version":"73ce9f1f2741a38f5d27393e627702ae2c46e6f2","status":"affected","lessThan":"dca151633c0fde90935311c60e7cfc064aa56134","versionType":"git"},{"version":"6.6.8","status":"affected","lessThan":"6.6.157","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-mcp2221.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-mcp2221.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/85d963499f1feeea287c0a37c3eac3fc1898eca9"},{"url":"https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38"},{"url":"https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a"},{"url":"https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1"},{"url":"https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-24T14:14:00.813Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.8","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}