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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-80918

HID: core: fix number/pointer type confusion on long items

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < bed7fe3a936b6bdd84671385951397ca673cf6e7affected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < aec2c2ec87d4ec1f098979f68cd81b29f031c8cbaffected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < 634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996affected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < abec577de5fc16cd5caae42f97cdcd0983c06d66affected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < dd8035dec26e98204d6e4a6e0cee5c4d329b3d7eaffected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < 1fa1591efd417e39e5e164bebea8ca7a3837c469affected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < e60159f5ea60254a5c3de4ea4f2f939f0171031baffected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < e542edada3f79387c0ac2a528cebf01f4ef47df8affected
  • 3dc8fc083dbfeede7b63a0c07581192e97711365 to < 28abce951343fcec26e397610868efa4e1395c3faffected

Linux Linux

Default version status: affected

  • 3.12affected
  • 0 to < 3.12unaffected
  • 5.10.267 to ≤ 5.10.*unaffected
  • 5.15.218 to ≤ 5.15.*unaffected
  • 6.1.185 to ≤ 6.1.*unaffected
  • 6.6.154 to ≤ 6.6.*unaffected
  • 6.12.106 to ≤ 6.12.*unaffected
  • 6.18.47 to ≤ 6.18.*unaffected
  • 7.1.11 to ≤ 7.1.*unaffected
  • 7.2.1 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References