{"id":"CVE-2026-80918","summary":"HID: core: fix number/pointer type confusion on long items","details":"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.","modified":"2026-09-10T03:48:25.676350671Z","published":"2026-09-09T16:13:15.799Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80918.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1fa1591efd417e39e5e164bebea8ca7a3837c469"},{"type":"WEB","url":"https://git.kernel.org/stable/c/28abce951343fcec26e397610868efa4e1395c3f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996"},{"type":"WEB","url":"https://git.kernel.org/stable/c/abec577de5fc16cd5caae42f97cdcd0983c06d66"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aec2c2ec87d4ec1f098979f68cd81b29f031c8cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bed7fe3a936b6bdd84671385951397ca673cf6e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dd8035dec26e98204d6e4a6e0cee5c4d329b3d7e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e542edada3f79387c0ac2a528cebf01f4ef47df8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e60159f5ea60254a5c3de4ea4f2f939f0171031b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80918.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80918"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3dc8fc083dbfeede7b63a0c07581192e97711365"},{"fixed":"bed7fe3a936b6bdd84671385951397ca673cf6e7"},{"fixed":"aec2c2ec87d4ec1f098979f68cd81b29f031c8cb"},{"fixed":"634f498ea5d5e8e01f8d9414d4f45eeaf9ee1996"},{"fixed":"abec577de5fc16cd5caae42f97cdcd0983c06d66"},{"fixed":"dd8035dec26e98204d6e4a6e0cee5c4d329b3d7e"},{"fixed":"1fa1591efd417e39e5e164bebea8ca7a3837c469"},{"fixed":"e60159f5ea60254a5c3de4ea4f2f939f0171031b"},{"fixed":"e542edada3f79387c0ac2a528cebf01f4ef47df8"},{"fixed":"28abce951343fcec26e397610868efa4e1395c3f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80918.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12.0"},{"fixed":"5.10.267"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.218"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.185"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.154"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.106"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.47"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80918.json"}}],"schema_version":"1.9.0"}