HID: magicmouse: do not keep a stale msc->input if no input is claimed
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.
CVE-2026-80782
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80782
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "c3597923932bb90d4fc2186aef552f6677175e4a",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "e0c224c93d10ee38854fdf24c815108aedd3dcb3",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "3d7a7bac4c75f25b2513505a0ac5ba909588ed2b",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "9bdf8c7bfd79f1090e61d28f969b32880fd77bb3",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "15b60ade825c8ce9ec560048a4ae3747e4572be3",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "0bf253e9ac994cb5329bc87b00bb4eeca9136791",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "2ef16934e069d5f771e989d6ee5c3ece5042f3cd",
"versionType": "git"
},
{
"status": "affected",
"version": "f1a9a149abc86903e81dd1b2e720f3f89874384b",
"lessThan": "0af3b89705688af01aa06025b84fa7a1e06ba6cc",
"versionType": "git"
},
{
"status": "affected",
"version": "0e55072e7c63a6569cab1447e9025d160abd9dd9",
"versionType": "git"
},
{
"status": "affected",
"version": "3.8.7",
"lessThan": "3.9",
"versionType": "semver"
}
],
"programFiles": [
"drivers/hid/hid-magicmouse.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.269",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.218",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.185",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.154",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.106",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.47",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.11",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2.1",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hid/hid-magicmouse.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80782
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34803 · Revision 1
- Added to Heist Feed
- Publisher date