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FKIE_CVE-2026-80918

Vulnerability from fkie_nvd - Published: 2026-09-09 17:17 - Updated: 2026-09-09 17:17
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1fa1591efd417e39e5e164bebea8ca7a3837c469
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/28abce951343fcec26e397610868efa4e1395c3f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abec577de5fc16cd5caae42f97cdcd0983c06d66
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aec2c2ec87d4ec1f098979f68cd81b29f031c8cb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bed7fe3a936b6bdd84671385951397ca673cf6e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd8035dec26e98204d6e4a6e0cee5c4d329b3d7e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e542edada3f79387c0ac2a528cebf01f4ef47df8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e60159f5ea60254a5c3de4ea4f2f939f0171031b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "bed7fe3a936b6bdd84671385951397ca673cf6e7",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "aec2c2ec87d4ec1f098979f68cd81b29f031c8cb",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "abec577de5fc16cd5caae42f97cdcd0983c06d66",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "dd8035dec26e98204d6e4a6e0cee5c4d329b3d7e",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "1fa1591efd417e39e5e164bebea8ca7a3837c469",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "e60159f5ea60254a5c3de4ea4f2f939f0171031b",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "e542edada3f79387c0ac2a528cebf01f4ef47df8",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            },
            {
              "lessThan": "28abce951343fcec26e397610868efa4e1395c3f",
              "status": "affected",
              "version": "3dc8fc083dbfeede7b63a0c07581192e97711365",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.267",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.218",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.185",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.154",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.106",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.47",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: core: fix number/pointer type confusion on long items\n\nWhen fetch_item() is called by hid_scan_report() on an item with\nHID_ITEM_TAG_LONG, it stores a pointer to the item data in\nitem-\u003edata.longdata instead of storing a value directly in\nitem-\u003edata.{u8/u16/u32}.\n\nWhen item_udata() or item_sdata() encounters such an item, it incorrectly\nassumes that the item is in short format, and therefore returns the lower\npart of a kernel pointer reinterpreted as a number.\n\nWhen a HID device is connected whose descriptor contains a\nHID_GLOBAL_ITEM_TAG_REPORT_SIZE encoded in long format with size=4, this\ncauses the lower half of a kernel pointer to be printed into dmesg as a\nnumber, like this:\n\n    hid (null): invalid report_size 107953555\n\nTo fix it, let item_udata() and item_sdata() verify that the item is in\nshort format.\n\nNote that this bug only affects hid_scan_report(), while the main parsing\npass hid_parse_collections() will always bail out when encountering a long\nitem.\n\nSidenote: There are currently no users of data.longdata; maybe we should\njust remove any parsing of long-format descriptors as a follow-up."
    }
  ],
  "id": "CVE-2026-80918",
  "lastModified": "2026-09-09T17:17:46.847",
  "metrics": {},
  "published": "2026-09-09T17:17:46.847",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1fa1591efd417e39e5e164bebea8ca7a3837c469"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/28abce951343fcec26e397610868efa4e1395c3f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/abec577de5fc16cd5caae42f97cdcd0983c06d66"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aec2c2ec87d4ec1f098979f68cd81b29f031c8cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bed7fe3a936b6bdd84671385951397ca673cf6e7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd8035dec26e98204d6e4a6e0cee5c4d329b3d7e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e542edada3f79387c0ac2a528cebf01f4ef47df8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e60159f5ea60254a5c3de4ea4f2f939f0171031b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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