HID: core: fix number/pointer type confusion on long items
In the Linux kernel, the following vulnerability has been resolved: HID: core: fix number/pointer type confusion on long items When fetch_item() is called by hid_scan_report() on an item with HID_ITEM_TAG_LONG, it stores a pointer to the item data in item->data.longdata instead of storing a value directly in item->data.{u8/u16/u32}. When item_udata() or item_sdata() encounters such an item, it incorrectly assumes that the item is in short format, and therefore returns the lower part of a kernel pointer reinterpreted as a number. When a HID device is connected whose descriptor contains a HID_GLOBAL_ITEM_TAG_REPORT_SIZE encoded in long format with size=4, this causes the lower half of a kernel pointer to be printed into dmesg as a number, like this: hid (null): invalid report_size 107953555 To fix it, let item_udata() and item_sdata() verify that the item is in short format. Note that this bug only affects hid_scan_report(), while the main parsing pass hid_parse_collections() will always bail out when encountering a long item. Sidenote: There are currently no users of data.longdata; maybe we should just remove any parsing of long-format descriptors as a follow-up.
CVE-2026-80918
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-2026-80918
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": [
{
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"version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
"lessThan": "bed7fe3a936b6bdd84671385951397ca673cf6e7",
"versionType": "git"
},
{
"status": "affected",
"version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
"lessThan": "aec2c2ec87d4ec1f098979f68cd81b29f031c8cb",
"versionType": "git"
},
{
"status": "affected",
"version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
"lessThan": "634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "abec577de5fc16cd5caae42f97cdcd0983c06d66",
"versionType": "git"
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{
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"lessThan": "dd8035dec26e98204d6e4a6e0cee5c4d329b3d7e",
"versionType": "git"
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{
"status": "affected",
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"lessThan": "1fa1591efd417e39e5e164bebea8ca7a3837c469",
"versionType": "git"
},
{
"status": "affected",
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"versionType": "git"
},
{
"status": "affected",
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"lessThan": "e542edada3f79387c0ac2a528cebf01f4ef47df8",
"versionType": "git"
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{
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"lessThan": "28abce951343fcec26e397610868efa4e1395c3f",
"versionType": "git"
}
],
"programFiles": [
"drivers/hid/hid-core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.267",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.218",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
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{
"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-core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80918
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34881 · Revision 1
- Added to Heist Feed
- Publisher date