{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80781", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.792Z", "datePublished": "2026-09-04T15:12:52.980Z", "dateUpdated": "2026-10-19T08:43:36.573Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:36.573Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: core: fix OOB read of field->usage in hid_set_field()\n\nhid_set_field() hands field->usage + offset to hid_dump_input() before\nthe guard that bounds offset:\n\n\thid_dump_input(field->report->device, field->usage + offset, value);\n\n\tif (offset >= field->report_count) {\n\t\thid_err(...);\n\t\treturn -1;\n\t}\n\nUnder CONFIG_DEBUG_FS hid_dump_input() dereferences that pointer, with\nbuf = hid_resolv_usage(usage->hid, NULL). The usage[] array is\nallocated inline with the hid_field in hid_register_field() and holds\nfield->maxusage entries, so an offset past it reads off the end of the\nkvzalloc()ed allocation and into a neighbouring object. Had the guard\nrun first, offset < report_count <= maxusage would already have confined\nthe pointer to the array.\n\nA caller supplies such an offset today. picolcd_fb_send_tile()\nvalidates only report->maxfield before issuing\nhid_set_field(report->field[0], 11 + i, ...) for i = 0..31, so its\noffsets are fixed at 11..42 and are never checked against the bound\nfield. When the device registers that field with fewer usages, the\nframebuffer deferred-io work drives the read on every tile. KASAN\nreports a 4-byte slab-out-of-bounds read in hid_dump_input() below\nhid_set_field(), and the same boot logs \"offset (1) exceeds\nreport_count (1)\" from the guard that runs only afterwards.\n\nMove the hid_dump_input() call below the guard. Because\nfield->maxusage >= field->report_count, the guard then establishes that\nfield->usage + offset lies inside the array before it is dereferenced,\nfor every caller and without changing behaviour on the valid path.\n\nDiscovered by XBOW, triaged by Baul Lee " } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-core.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "465544b3d6602cfbdc2305d5cbfb7f4954353b63", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "4993e1ab85d7d3f4a40d81852170f9665483bbd8", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "313ead1abed945544703b100a12c5a10fdf78409", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c1d9c16af51cc6ff92a5a062617d3b022dd01078", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a38212687519f2a72f43e62dec1348a690412404", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9a1d7c5f0d82e8665715d5e47c9410c6a97e3748", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5215ea00a747eca34cb2f603cfef91fef76c2558", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "cbcc0e8dea499e5ca86b583372ccb1815cccc570", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a13cdb19fcb223ed41bdab3bab42b98dba87e90b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-core.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.267", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.218", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.185", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.154", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.106", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.1", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.267" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.218" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.185" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.12.106" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.18.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "7.1.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "7.2.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/465544b3d6602cfbdc2305d5cbfb7f4954353b63" }, { "url": "https://git.kernel.org/stable/c/4993e1ab85d7d3f4a40d81852170f9665483bbd8" }, { "url": "https://git.kernel.org/stable/c/313ead1abed945544703b100a12c5a10fdf78409" }, { "url": "https://git.kernel.org/stable/c/c1d9c16af51cc6ff92a5a062617d3b022dd01078" }, { "url": "https://git.kernel.org/stable/c/a38212687519f2a72f43e62dec1348a690412404" }, { "url": "https://git.kernel.org/stable/c/9a1d7c5f0d82e8665715d5e47c9410c6a97e3748" }, { "url": "https://git.kernel.org/stable/c/5215ea00a747eca34cb2f603cfef91fef76c2558" }, { "url": "https://git.kernel.org/stable/c/cbcc0e8dea499e5ca86b583372ccb1815cccc570" }, { "url": "https://git.kernel.org/stable/c/a13cdb19fcb223ed41bdab3bab42b98dba87e90b" } ], "title": "HID: core: fix OOB read of field->usage in hid_set_field()", "x_generator": { "engine": "bippy-1.2.0" } } } }