HID: magicmouse: do not keep a stale msc->input if no input is claimed
Summary
| CVE | CVE-2026-80782 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-04 16:18:04 UTC |
| Updated | 2026-09-04 16:18:04 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: do not keep a stale msc->input if no input is claimed magicmouse_input_mapping() caches the first hid_input's input_dev in msc->input while the report descriptor is parsed, and the rest of the driver treats a non-NULL msc->input as proof that an input device was registered. That does not hold on the hid-input error path. If hidinput_connect() fails -- for instance because input_register_device() returns an error -- it unwinds through hidinput_disconnect(), which frees every input_dev it created, including the one cached in msc->input. The failure does not abort the probe. hid_connect() only skips the claim: if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev, connect_mask & HID_CONNECT_HIDINPUT_FORCE)) hdev->claimed |= HID_CLAIMED_INPUT; and the "device has no listeners" bailout below it does not fire for this driver, which sets ->raw_event; on the USB Magic Mouse 2 / Magic Trackpad 2 paths hidraw and hiddev are claimed as well. hid_hw_start() therefore returns 0 and magicmouse_probe() continues with msc->input pointing at freed memory. Being non-NULL, it passes the "input not registered" check in probe and the NULL checks in ->raw_event and ->event, so the next input report dereferences freed memory. Clear msc->input when the HID core did not claim an input device, so the existing NULL checks cover this case as well. |
Risk And Classification
EPSS: 0.001950000 probability, percentile 0.092810000 (date 2026-09-07)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b c3597923932bb90d4fc2186aef552f6677175e4a git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b e0c224c93d10ee38854fdf24c815108aedd3dcb3 git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14 git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 3d7a7bac4c75f25b2513505a0ac5ba909588ed2b git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 9bdf8c7bfd79f1090e61d28f969b32880fd77bb3 git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 15b60ade825c8ce9ec560048a4ae3747e4572be3 git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 0bf253e9ac994cb5329bc87b00bb4eeca9136791 git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 2ef16934e069d5f771e989d6ee5c3ece5042f3cd git | Not specified |
| CNA | Linux | Linux | affected f1a9a149abc86903e81dd1b2e720f3f89874384b 0af3b89705688af01aa06025b84fa7a1e06ba6cc git | Not specified |
| CNA | Linux | Linux | affected 0e55072e7c63a6569cab1447e9025d160abd9dd9 git | Not specified |
| CNA | Linux | Linux | affected 3.8.7 3.9 semver | Not specified |
| CNA | Linux | Linux | affected 3.9 | Not specified |
| CNA | Linux | Linux | unaffected 3.9 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.269 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.218 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.185 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.154 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.106 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.47 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.11 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.1 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0bf253e9ac994cb5329bc87b00bb4eeca9136791 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/15b60ade825c8ce9ec560048a4ae3747e4572be3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c3597923932bb90d4fc2186aef552f6677175e4a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2ef16934e069d5f771e989d6ee5c3ece5042f3cd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3d7a7bac4c75f25b2513505a0ac5ba909588ed2b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.