{"id":"CVE-2026-80782","summary":"HID: magicmouse: do not keep a stale msc-\u003einput if no input is claimed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: do not keep a stale msc-\u003einput if no input is claimed\n\nmagicmouse_input_mapping() caches the first hid_input's input_dev in\nmsc-\u003einput while the report descriptor is parsed, and the rest of the\ndriver treats a non-NULL msc-\u003einput 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-\u003einput.\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-\u003eclaimed |= HID_CLAIMED_INPUT;\n\nand the \"device has no listeners\" bailout below it does not fire for this\ndriver, which sets -\u003eraw_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-\u003einput pointing at\nfreed memory. Being non-NULL, it passes the \"input not registered\" check\nin probe and the NULL checks in -\u003eraw_event and -\u003eevent, so the next\ninput report dereferences freed memory.\n\nClear msc-\u003einput when the HID core did not claim an input device, so the\nexisting NULL checks cover this case as well.","modified":"2026-10-24T02:30:47.602526423Z","published":"2026-09-04T15:12:53.933Z","related":["openSUSE-SU-2026:11773-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80782.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0bf253e9ac994cb5329bc87b00bb4eeca9136791"},{"type":"WEB","url":"https://git.kernel.org/stable/c/15b60ade825c8ce9ec560048a4ae3747e4572be3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2ef16934e069d5f771e989d6ee5c3ece5042f3cd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d7a7bac4c75f25b2513505a0ac5ba909588ed2b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c3597923932bb90d4fc2186aef552f6677175e4a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80782.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80782"},{"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":"f1a9a149abc86903e81dd1b2e720f3f89874384b"},{"fixed":"c3597923932bb90d4fc2186aef552f6677175e4a"},{"fixed":"e0c224c93d10ee38854fdf24c815108aedd3dcb3"},{"fixed":"403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14"},{"fixed":"3d7a7bac4c75f25b2513505a0ac5ba909588ed2b"},{"fixed":"9bdf8c7bfd79f1090e61d28f969b32880fd77bb3"},{"fixed":"15b60ade825c8ce9ec560048a4ae3747e4572be3"},{"fixed":"0bf253e9ac994cb5329bc87b00bb4eeca9136791"},{"fixed":"2ef16934e069d5f771e989d6ee5c3ece5042f3cd"},{"fixed":"0af3b89705688af01aa06025b84fa7a1e06ba6cc"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3.8.7"},{"fixed":"3.9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0e55072e7c63a6569cab1447e9025d160abd9dd9"}]}],"versions":["v3.8.13","v3.8.12","v3.8.11","v3.8.10","v3.8.9","v3.8.8","v3.8.7"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80782.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9.0"},{"fixed":"5.10.269"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.218"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.185"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.154"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.106"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.47"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80782.json"}}],"schema_version":"1.9.0"}