{"id":"CVE-2026-90221","revision":null,"records":[{"revision":"3e6ff220b1f0404a9a70b4a32ad4fc75","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90221","aliases":[],"title":"nfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix use of uninitialized memory in CORE_INIT_RSP parsing\n\nnci_core_init_rsp_packet_v1() and nci_core_init_rsp_packet_v2() parse\nthe CORE_INIT_RSP packet without validating that the skb contains\nenough data. A malformed response (e.g. injected via virtual_ncidev)\ncan declare a large num_supported_rf_interfaces while providing\ninsufficient data, causing reads of uninitialized slab memory. This\nis later used in nci_init_complete_req(), triggering a KMSAN\nuninit-value warning.\n\nAdd skb length checks before accessing packet fields:\n- Validate the skb has at least 1 byte for the status field.\n- Validate the skb can hold the fixed-size header before parsing.\n- In v2, bounds-check each variable-length rf_interface entry and its\n extension parameters within the parsing loop.\n- In v1, verify the skb is large enough for both the variable-length\n rf_interfaces array and the trailing rsp_2 structure.","state":0,"publishedAt":"2026-09-17T16:07:32.07+00:00","modifiedAt":"2026-10-19T08:59:57.703+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 \"net/nfc/nci/rsp.c\"\n ],\n \"versions\": [\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"baed3fdf6ed2195c56f25ae18a086b938dcd3983\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"2f434478771a4ebdd535033561c0590bcde39753\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"4f0483bbcdaccc9d4aee30df7351863334cecfa7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"7d44b897bff84edcd4814899314d661ad4956a8e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bcd684aace34fedbd473fbd9b21ed06b0c2d2212\",\n \"lessThan\": \"d56575a2595ee1f597f39e8a1cfb67ed3501678d\",\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 \"net/nfc/nci/rsp.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.11\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.11\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\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\": \"6.12.110\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.52\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.6\",\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/baed3fdf6ed2195c56f25ae18a086b938dcd3983","https://git.kernel.org/stable/c/2f434478771a4ebdd535033561c0590bcde39753","https://git.kernel.org/stable/c/5487f04c1ccbfa15aa6e531eb1ec9c9ec9c7bf31","https://git.kernel.org/stable/c/bbe68e8249e2c76d65adfd9224fa95f1ca0fbe4e","https://git.kernel.org/stable/c/4f0483bbcdaccc9d4aee30df7351863334cecfa7","https://git.kernel.org/stable/c/7d44b897bff84edcd4814899314d661ad4956a8e","https://git.kernel.org/stable/c/d56575a2595ee1f597f39e8a1cfb67ed3501678d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90221","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90221","identifiers":["CVE-2026-90221"]},"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-5923d59598fe46c98ec384fbfaf44bc7","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T03:16:18.1412099+00:00","lastSuccessAt":"2026-11-09T03:16:18.138+00:00","error":"6 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T03:16:18.138+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13655,"expectedIdentifiers":13706,"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":"2026-11-09T03:04:09.5264463+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T03:04:09.5264463+00:00","lastSuccessAt":"2026-11-09T03:04:09.6884561+00:00","error":null,"lastVerifiedAt":"2026-11-09T03:04:09.6884561+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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