{"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":"2026-09-06T03:46:58.565914444Z","published":"2026-09-04T15:12:53.933Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80782.json","cna_assigner":"Linux"},"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":"0"},{"last_affected":"0e55072e7c63a6569cab1447e9025d160abd9dd9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3.8.7"},{"fixed":"3.9"}]}],"versions":["v3.8.6","v3.8","v3.8.5","v3.8.4","v3.8.3","v3.8.2","v3.8.1","v3.8-rc7","v3.8-rc6","v3.8-rc5","v3.8-rc2","v3.8-rc1","v3.8-rc3","v3.8-rc4","v3.7","v3.7-rc1","v3.6","v3.7-rc6","v3.7-rc7","v3.7-rc3","v3.7-rc8","v3.7-rc2","v3.7-rc4","v3.7-rc5","v3.6-rc7","v3.6-rc1","v3.5-rc3","v3.6-rc6","v3.6-rc5","v3.5","v3.6-rc3","v3.6-rc4","v3.6-rc2","v3.4-rc4","v3.5-rc7","v3.5-rc5","v3.5-rc6","v3.5-rc2","v3.5-rc1","v3.5-rc4","v3.4","v3.4-rc2","v3.4-rc1","v3.4-rc7","v3.4-rc6","v3.4-rc3","v3.4-rc5","v3.3","v3.3-rc6","v3.3-rc3","v3.3-rc7","v3.3-rc2","v3.3-rc5","v3.2","v3.3-rc4","v3.3-rc1","v3.2-rc4","v3.2-rc7","v3.2-rc6","v3.2-rc5","v3.2-rc3","v3.1","v3.2-rc2","v3.2-rc1","v3.1-rc1","v3.1-rc9","v3.1-rc8","v3.1-rc10","v3.1-rc7","v3.1-rc3","v3.1-rc2","v3.1-rc4","v3.1-rc5","v3.0","v3.1-rc6","v3.0-rc7","v3.0-rc4","v3.0-rc6","v3.0-rc5","v3.0-rc3","v3.0-rc1","v2.6.39","v3.0-rc2","v2.6.38","v2.6.39-rc2","v2.6.39-rc7","v2.6.39-rc5","v2.6.39-rc1","v2.6.38-rc7","v2.6.39-rc6","v2.6.39-rc4","v2.6.39-rc3","v2.6.37","v2.6.38-rc1","v2.6.38-rc8","v2.6.38-rc2","v2.6.38-rc6","v2.6.38-rc5","v2.6.38-rc4","v2.6.38-rc3","v2.6.37-rc4","v2.6.37-rc2","v2.6.36","v2.6.37-rc5","v2.6.37-rc8","v2.6.37-rc7","v2.6.37-rc6","v2.6.37-rc1","v2.6.37-rc3","v2.6.36-rc6","v2.6.35-rc4","v2.6.36-rc8","v2.6.35","v2.6.36-rc7","v2.6.36-rc3","v2.6.36-rc5","v2.6.36-rc4","v2.6.36-rc2","v2.6.36-rc1","v2.6.35-rc5","v2.6.35-rc6","v2.6.34","v2.6.35-rc3","v2.6.35-rc1","v2.6.35-rc2","v2.6.34-rc7","v2.6.34-rc6","v2.6.34-rc5","v2.6.34-rc4","v2.6.34-rc3","v2.6.34-rc2","v2.6.34-rc1","v2.6.33","v2.6.33-rc6","v2.6.33-rc8","v2.6.33-rc4","v2.6.33-rc5","v2.6.33-rc3","v2.6.33-rc7","v2.6.33-rc2","v2.6.32","v2.6.33-rc1","v2.6.32-rc8","v2.6.32-rc7","v2.6.32-rc6","v2.6.31","v2.6.32-rc5","v2.6.32-rc4","v2.6.32-rc2","v2.6.32-rc1","v2.6.32-rc3","v2.6.31-rc9","v2.6.31-rc1","v2.6.31-rc7","v2.6.31-rc8","v2.6.31-rc6","v2.6.30-rc6","v2.6.30","v2.6.31-rc4","v2.6.31-rc5","v2.6.31-rc3","v2.6.31-rc2","v2.6.30-rc7","v2.6.30-rc8","v2.6.30-rc5","v2.6.30-rc3","v2.6.30-rc4","v2.6.30-rc1","v2.6.30-rc2","v2.6.29","v2.6.29-rc8","v2.6.29-rc7","v2.6.29-rc5","v2.6.29-rc1","v2.6.29-rc6","v2.6.29-rc4","v2.6.29-rc3","v2.6.29-rc2","v2.6.28","v2.6.28-rc7","v2.6.28-rc9","v2.6.28-rc8","v2.6.28-rc6","v2.6.28-rc5","v2.6.28-rc4","v2.6.28-rc2","v2.6.28-rc3","v2.6.28-rc1","v2.6.27","v2.6.27-rc7","v2.6.27-rc9","v2.6.27-rc8","v2.6.27-rc5","v2.6.27-rc6","v2.6.27-rc4","v2.6.27-rc1","v2.6.27-rc3","v2.6.27-rc2","v2.6.26","v2.6.26-rc9","v2.6.26-rc8","v2.6.26-rc3","v2.6.26-rc7","v2.6.26-rc6","v2.6.26-rc5","v2.6.26-rc4","v2.6.26-rc2","v2.6.26-rc1","v2.6.25","v2.6.25-rc7","v2.6.25-rc9","v2.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