{"id":"CVE-2026-81014","revision":null,"records":[{"revision":"382438ff91bb4ecd9a7a264ffc943029","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-81014","aliases":[],"title":"platform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store()\n\nsk_store() and kek_store() strip a trailing newline from the sysfs\nwrite before allocating the key buffer:\n\n\tlength = count;\n\tif (buf[length - 1] == '\\n')\n\t\tlength--;\n\tbioscfg_drv.spm_data.signing_key = kmemdup(buf, length, GFP_KERNEL);\n\nbut then pass the original \"count\" (not \"length\") as the copy size to\nhp_wmi_perform_query(), which memcpy()s that many bytes out of the\n\"length\"-sized allocation, reading one byte past it whenever the write\nends in a newline, the normal case for a shell \"echo\" into sysfs.\n\nKASAN confirms this directly:\n\n BUG: KASAN: slab-out-of-bounds in hp_wmi_perform_query+0x1e9/0x460 [hp_bioscfg]\n Read of size 28 at addr ffff88813c8e2b80 by task python3/16022\n ...\n sk_store+0xa7/0x240 [hp_bioscfg]\n kernfs_fop_write_iter+0x3e1/0x5d0\n ...\n The buggy address is located 0 bytes inside of\n allocated 27-byte region [ffff88813c8e2b80, ffff88813c8e2b9b)\n\nReproduced identically for kek_store, and at multiple write sizes\n(28, 57, 201 bytes), each time reading exactly one byte past a\nkmemdup() allocation one byte smaller than the write.\n\nFix by passing \"length\" instead of \"count\" to hp_wmi_perform_query()\nin both functions.","state":0,"publishedAt":"2026-09-11T19:43:03.397+00:00","modifiedAt":"2026-10-19T08:46:39.559+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c\"\n ],\n \"versions\": [\n {\n \"version\": \"b2715aa2e1352c0060b9dcba57a2e465bbfbcd68\",\n \"lessThan\": \"81db79fed115640736188e56595b1e9aec317d5b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b2715aa2e1352c0060b9dcba57a2e465bbfbcd68\",\n \"lessThan\": \"4c6374dcb270d12907b880cf82a5a5ef21785fc3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b2715aa2e1352c0060b9dcba57a2e465bbfbcd68\",\n \"lessThan\": \"7cd8fe01aba303a2382db0966eb6c8ab41d5f3c2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b2715aa2e1352c0060b9dcba57a2e465bbfbcd68\",\n \"lessThan\": \"67b60703d7d8af1ca0e49f72e1bdb1ccecd41b5b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b2715aa2e1352c0060b9dcba57a2e465bbfbcd68\",\n \"lessThan\": \"a7508c7959ff8d037327d377ed21a9c0eabe4674\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/platform/x86/hp/hp-bioscfg/spmobj-attributes.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.109\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.50\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.4\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/81db79fed115640736188e56595b1e9aec317d5b","https://git.kernel.org/stable/c/4c6374dcb270d12907b880cf82a5a5ef21785fc3","https://git.kernel.org/stable/c/7cd8fe01aba303a2382db0966eb6c8ab41d5f3c2","https://git.kernel.org/stable/c/67b60703d7d8af1ca0e49f72e1bdb1ccecd41b5b","https://git.kernel.org/stable/c/a7508c7959ff8d037327d377ed21a9c0eabe4674"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-81014","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-81014","identifiers":["CVE-2026-81014"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T05:02:23.3236319+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T05:02:23.3236319+00:00","lastSuccessAt":"2026-11-09T05:02:23.479545+00:00","error":null,"lastVerifiedAt":"2026-11-09T05:02:23.4795489+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-61bf15172f364246efc204ad9b25e3f89710939e13c23b3efb3d009b5fdad808","complete":true,"records":421290,"lastAttemptAt":"2026-11-09T05:02:14.5383867+00:00","lastSuccessAt":"2026-11-09T05:02:14.5253969+00:00","error":null,"lastVerifiedAt":"2026-11-09T05:02:14.5383867+00:00","snapshotPublishedAt":"2026-11-09T04:29:38+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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Not a global EPSS backfill.","generation":"2026-11-09T05:02:23.3236319+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T05:02:23.3236319+00:00","lastSuccessAt":"2026-11-09T05:02:23.4802497+00:00","error":null,"lastVerifiedAt":"2026-11-09T05:02:23.4802499+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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