{"id":"CVE-2026-80782","state":"PUBLISHED","title":"HID: magicmouse: do not keep a stale msc->input if no input is claimed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: do not keep a stale msc->input if no input is claimed\n\nmagicmouse_input_mapping() caches the first hid_input's input_dev in\nmsc->input while the report descriptor is parsed, and the rest of the\ndriver treats a non-NULL msc->input as proof that an input device was\nregistered.\n\nThat does not hold on the hid-input error path. If hidinput_connect()\nfails -- for instance because input_register_device() returns an error --\nit unwinds through hidinput_disconnect(), which frees every input_dev it\ncreated, including the one cached in msc->input.\n\nThe failure does not abort the probe. hid_connect() only skips the claim:\n\n\tif ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,\n\t\t\t\tconnect_mask & HID_CONNECT_HIDINPUT_FORCE))\n\t\thdev->claimed |= HID_CLAIMED_INPUT;\n\nand the \"device has no listeners\" bailout below it does not fire for this\ndriver, which sets ->raw_event; on the USB Magic Mouse 2 / Magic Trackpad\n2 paths hidraw and hiddev are claimed as well. hid_hw_start() therefore\nreturns 0 and magicmouse_probe() continues with msc->input pointing at\nfreed memory. Being non-NULL, it passes the \"input not registered\" check\nin probe and the NULL checks in ->raw_event and ->event, so the next\ninput report dereferences freed memory.\n\nClear msc->input when the HID core did not claim an input device, so the\nexisting NULL checks cover this case as well.","publishedAt":"2026-09-04T15:12:53.933Z","updatedAt":"2026-10-19T08:43:37.541Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"c3597923932bb90d4fc2186aef552f6677175e4a","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"e0c224c93d10ee38854fdf24c815108aedd3dcb3","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"3d7a7bac4c75f25b2513505a0ac5ba909588ed2b","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"9bdf8c7bfd79f1090e61d28f969b32880fd77bb3","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"15b60ade825c8ce9ec560048a4ae3747e4572be3","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"0bf253e9ac994cb5329bc87b00bb4eeca9136791","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"2ef16934e069d5f771e989d6ee5c3ece5042f3cd","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"0af3b89705688af01aa06025b84fa7a1e06ba6cc","versionType":"git"},{"version":"0e55072e7c63a6569cab1447e9025d160abd9dd9","status":"affected","versionType":"git"},{"version":"3.8.7","status":"affected","lessThan":"3.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-magicmouse.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"5.10.269","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.218","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.185","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.154","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","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-magicmouse.c"]}],"references":["https://git.kernel.org/stable/c/c3597923932bb90d4fc2186aef552f6677175e4a","https://git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3","https://git.kernel.org/stable/c/403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14","https://git.kernel.org/stable/c/3d7a7bac4c75f25b2513505a0ac5ba909588ed2b","https://git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3","https://git.kernel.org/stable/c/15b60ade825c8ce9ec560048a4ae3747e4572be3","https://git.kernel.org/stable/c/0bf253e9ac994cb5329bc87b00bb4eeca9136791","https://git.kernel.org/stable/c/2ef16934e069d5f771e989d6ee5c3ece5042f3cd","https://git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80782.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80782","state":"PUBLISHED","datePublished":"2026-09-04T15:12:53.933Z","dateUpdated":"2026-10-19T08:43:37.541Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.792Z"},"containers":{"cna":{"title":"HID: magicmouse: do not keep a stale msc->input if no input is claimed","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: do not keep a stale msc->input if no input is claimed\n\nmagicmouse_input_mapping() caches the first hid_input's input_dev in\nmsc->input while the report descriptor is parsed, and the rest of the\ndriver treats a non-NULL msc->input as proof that an input device was\nregistered.\n\nThat does not hold on the hid-input error path. If hidinput_connect()\nfails -- for instance because input_register_device() returns an error --\nit unwinds through hidinput_disconnect(), which frees every input_dev it\ncreated, including the one cached in msc->input.\n\nThe failure does not abort the probe. hid_connect() only skips the claim:\n\n\tif ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,\n\t\t\t\tconnect_mask & HID_CONNECT_HIDINPUT_FORCE))\n\t\thdev->claimed |= HID_CLAIMED_INPUT;\n\nand the \"device has no listeners\" bailout below it does not fire for this\ndriver, which sets ->raw_event; on the USB Magic Mouse 2 / Magic Trackpad\n2 paths hidraw and hiddev are claimed as well. hid_hw_start() therefore\nreturns 0 and magicmouse_probe() continues with msc->input pointing at\nfreed memory. Being non-NULL, it passes the \"input not registered\" check\nin probe and the NULL checks in ->raw_event and ->event, so the next\ninput report dereferences freed memory.\n\nClear msc->input when the HID core did not claim an input device, so the\nexisting NULL checks cover this case as well."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"c3597923932bb90d4fc2186aef552f6677175e4a","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"e0c224c93d10ee38854fdf24c815108aedd3dcb3","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"3d7a7bac4c75f25b2513505a0ac5ba909588ed2b","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"9bdf8c7bfd79f1090e61d28f969b32880fd77bb3","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"15b60ade825c8ce9ec560048a4ae3747e4572be3","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"0bf253e9ac994cb5329bc87b00bb4eeca9136791","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"2ef16934e069d5f771e989d6ee5c3ece5042f3cd","versionType":"git"},{"version":"f1a9a149abc86903e81dd1b2e720f3f89874384b","status":"affected","lessThan":"0af3b89705688af01aa06025b84fa7a1e06ba6cc","versionType":"git"},{"version":"0e55072e7c63a6569cab1447e9025d160abd9dd9","status":"affected","versionType":"git"},{"version":"3.8.7","status":"affected","lessThan":"3.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hid/hid-magicmouse.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"5.10.269","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.218","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.185","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.154","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","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-magicmouse.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c3597923932bb90d4fc2186aef552f6677175e4a"},{"url":"https://git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3"},{"url":"https://git.kernel.org/stable/c/403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14"},{"url":"https://git.kernel.org/stable/c/3d7a7bac4c75f25b2513505a0ac5ba909588ed2b"},{"url":"https://git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3"},{"url":"https://git.kernel.org/stable/c/15b60ade825c8ce9ec560048a4ae3747e4572be3"},{"url":"https://git.kernel.org/stable/c/0bf253e9ac994cb5329bc87b00bb4eeca9136791"},{"url":"https://git.kernel.org/stable/c/2ef16934e069d5f771e989d6ee5c3ece5042f3cd"},{"url":"https://git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:43:37.541Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.10.269"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.15.218"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.185"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.6.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.2.1"},{"vulnerabl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