{"id":"CVE-2026-46022","revision":null,"records":[{"revision":"bc2ac87077054bd5a27e6168a080240b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46022","aliases":[],"title":"misc: ibmasm: fix OOB MMIO read in ibmasm_handle_mouse_interrupt()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: ibmasm: fix OOB MMIO read in ibmasm_handle_mouse_interrupt()\n\nibmasm_handle_mouse_interrupt() performs an out-of-bounds MMIO read\nwhen the queue reader or writer index from hardware exceeds\nREMOTE_QUEUE_SIZE (60).\n\nA compromised service processor can trigger this by writing an\nout-of-range value to the reader or writer MMIO register before\nasserting an interrupt. Since writer is re-read from hardware on\nevery loop iteration, it can also be set to an out-of-range value\nafter the loop has already started.\n\nThe root cause is that get_queue_reader() and get_queue_writer() return\nraw readl() values that are passed directly into get_queue_entry(),\nwhich computes:\n\n queue_begin + reader * sizeof(struct remote_input)\n\nwith no bounds check. This unchecked MMIO address is then passed to\nmemcpy_fromio(), reading 8 bytes from unintended device registers.\nFor sufficiently large values the address falls outside the PCI BAR\nmapping entirely, triggering a machine check exception.\n\nFix by checking both indices against REMOTE_QUEUE_SIZE at the top of\nthe loop body, before any call to get_queue_entry(). On an out-of-range\nvalue, reset the reader register to 0 via set_queue_reader() before\nbreaking, so that normal queue operation can resume if the corrupted\nhardware state is transient.","state":0,"publishedAt":"2026-05-27T12:56:26.791+00:00","modifiedAt":"2026-10-15T01:20:00.194+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/misc/ibmasm/remote.c\"\n ],\n \"versions\": [\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"6f6ecc9153df176e956d0664b56f93080b0a45f0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"bac8643486f854dd53af9b23aea7dbbd9b7c1865\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"f7e5b4eefd7be3e09f8bd5fee63ed478fd7446ab\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"fc7e9a74e32299d7e93e178ca482a0b59ef1595b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"07c4f18b303106e6b24492c12b95d48a4b985841\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"22a16d3eafee92a165c756081587c95850127107\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"1ca75f6b74ec7f685464e5745ecfcf3a76d284e9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"278d72ae8803ffcd16070c95fe1d53f4466dc741\",\n \"lessThan\": \"4b6e6ead556734bdc14024c5f837132b1e7a4b84\",\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/misc/ibmasm/remote.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.13\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.13\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.258\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.209\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.140\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.86\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.27\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.4\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/6f6ecc9153df176e956d0664b56f93080b0a45f0","https://git.kernel.org/stable/c/bac8643486f854dd53af9b23aea7dbbd9b7c1865","https://git.kernel.org/stable/c/f7e5b4eefd7be3e09f8bd5fee63ed478fd7446ab","https://git.kernel.org/stable/c/fc7e9a74e32299d7e93e178ca482a0b59ef1595b","https://git.kernel.org/stable/c/07c4f18b303106e6b24492c12b95d48a4b985841","https://git.kernel.org/stable/c/22a16d3eafee92a165c756081587c95850127107","https://git.kernel.org/stable/c/1ca75f6b74ec7f685464e5745ecfcf3a76d284e9","https://git.kernel.org/stable/c/4b6e6ead556734bdc14024c5f837132b1e7a4b84"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46022","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46022","identifiers":["CVE-2026-46022"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-83353c603c8b44ff880a9955a737c288","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T18:17:25.0500848+00:00","lastSuccessAt":"2026-11-09T18:17:25.037+00:00","error":"6 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T18:17:25.037+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13294,"expectedIdentifiers":13707,"failedIdentifiers":6},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T18:04:49.9033842+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T18:04:49.9033842+00:00","lastSuccessAt":"2026-11-09T18:04:51.425345+00:00","error":null,"lastVerifiedAt":"2026-11-09T18:04:51.425345+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. No reader inventory is sent.","generation":"enrichment-b51e790980dd40318db1b79f996a5e64","complete":true,"records":13667,"lastAttemptAt":"2026-11-09T18:05:17.6533401+00:00","lastSuccessAt":"2026-11-09T18:05:17.648+00:00","error":null,"lastVerifiedAt":"2026-11-09T18:05:17.648+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13707,"expectedIdentifiers":13707,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T18:04:49.7604938+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T18:04:49.7604938+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-712163772d637a9cfaa34d4241efb9e9d0ccd6149596c672c613d362f44af841","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T18:02:23.1622896+00:00","lastSuccessAt":"2026-11-09T18:02:23.0088273+00:00","error":null,"lastVerifiedAt":"2026-11-09T18:02:23.1622896+00:00","snapshotPublishedAt":"2026-11-09T17:03:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-761ecc9061239b0da572dc9254c6f384c1d19339eb08408c436647a2f26129e9","complete":true,"records":3064,"lastAttemptAt":"2026-11-09T18:04:49.8693187+00:00","lastSuccessAt":"2026-11-09T17:05:03.4044794+00:00","error":null,"lastVerifiedAt":"2026-11-09T18:04:49.8693187+00:00","snapshotPublishedAt":"2026-11-09T16:33:20+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-e3fec63b2a5926ae79916bc9569f5c1069b095db78f2be319f909e69e8e6d7d3","complete":true,"records":231313,"lastAttemptAt":"2026-11-09T18:04:49.6325121+00:00","lastSuccessAt":"2026-11-09T18:04:48.1910635+00:00","error":null,"lastVerifiedAt":"2026-11-09T18:04:49.6325121+00:00","snapshotPublishedAt":"2026-11-09T17:33:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}