HID: pidff: fix OOB write when hid->inputs is empty
In the Linux kernel, the following vulnerability has been resolved: HID: pidff: fix OOB write when hid->inputs is empty hid_pidff_init_with_quirks() derives its input_dev from list_entry(hid->inputs.next, struct hid_input, list) without first checking that hid->inputs is non-empty. The list member of struct hid_input is at offset 0, so on an empty list list_entry() yields &hid->inputs itself and the following hidinput->input load reads an unrelated member of struct hid_device. dev is then a type-confused pointer, and force-feedback init writes through it: each set_bit(FF_*, dev->ffbit) stores 8 bytes at dev + 192, past the end of the object dev actually aliases, and input_ff_create() adds further writes of a heap pointer and two function pointers. Until hid-universal-pidff the only caller was hid_pidff_init() from usbhid, which runs under HID_CLAIMED_INPUT and therefore always has at least one hid_input. universal_pidff_probe() starts the device with HID_CONNECT_DEFAULT & ~HID_CONNECT_FF and then calls hid_pidff_init_with_quirks() directly whenever the descriptor carries a PID usage page, bypassing that gate. A report descriptor whose only application collection is on HID_UP_PID leaves hid->inputs empty while hid_connect() still succeeds through the hidraw claim, so probe reaches the unguarded list_entry(). The write happens in the USB probe path, on the hotplug workqueue, so plugging in a malicious device is enough to trigger it; no attacker software and no logged-in user ar
CVE-2026-80780
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-2026-80780
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": "c1fde337b317f0a226de92803288741c30799eb0",
"lessThan": "2e0471bf3ab2a6b7eedcc3b8a2a17286b6a9ae1a",
"versionType": "git"
},
{
"status": "affected",
"version": "f45f26a6b3e7260c129c7c6bb0ace63aeb7b3868",
"lessThan": "ad9330f7e74a97842815a291a0d7389ed2f34504",
"versionType": "git"
},
{
"status": "affected",
"version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420",
"lessThan": "4529c03c3da8f91392cd630453452f569973f4cd",
"versionType": "git"
},
{
"status": "affected",
"version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420",
"lessThan": "d416eeb7d016d82af67c149d884bc6a9323c4ac7",
"versionType": "git"
},
{
"status": "affected",
"version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420",
"lessThan": "86b63adfa5e132beac4be72668fdf9128fe51d2e",
"versionType": "git"
},
{
"status": "affected",
"version": "f06bf8d94fffbb544b1cb5402c92e0a075f0d420",
"lessThan": "67bb1074e3d2d12fa059a9cc707e89398a4e4704",
"versionType": "git"
},
{
"status": "affected",
"version": "af9f2471dfe5a48384f5b7f021a673fbc741465e",
"versionType": "git"
},
{
"status": "affected",
"version": "b797352954eee6dc084cfaed0659dea60adfb484",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.88",
"lessThan": "6.6.156",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.24",
"lessThan": "6.12.108",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.13.12",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.14.3",
"lessThan": "6.15",
"versionType": "semver"
}
],
"programFiles": [
"drivers/hid/usbhid/hid-pidff.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.156",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.108",
"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/usbhid/hid-pidff.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80780
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34799 · Revision 1
- Added to Heist Feed
- Publisher date