{"api_version":"1","generated_at":"2026-09-17T23:44:44+00:00","cve":"CVE-2026-90223","urls":{"html":"https://cve.report/CVE-2026-90223","api":"https://cve.report/api/cve/CVE-2026-90223.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90223","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90223"},"summary":{"title":"nfc: llcp: bound SNL TLV parsing to the skb and add length checks","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: bound SNL TLV parsing to the skb and add length checks\n\nnfc_llcp_recv_snl() walked the SNL TLV list using a u16 offset/length\npair derived from skb->len, without bounding reads to the actual skb\ndata. Three problems followed:\n\n  - For a short frame (skb->len < LLCP_HEADER_SIZE), tlv_len underflowed.\n  - The per-TLV header (type, length) was read without checking that two\n    bytes remained.\n  - A declared TLV length could run past the end of the buffer, and an\n    SDREQ with length == 0 made \"service_name_len = length - 1\" underflow\n    (size_t), driving an out-of-bounds read in the following strncmp() /\n    nfc_llcp_sock_from_sn(). The SDRES case likewise read tlv[2]/tlv[3]\n    without a length check.\n\nA nearby NFC device can reach this without authentication; LLCP link\nactivation happens automatically after NFC-DEP.\n\nWalk the TLV list by pointer, bounded by skb_tail_pointer() over the\nlinear skb data, and validate each TLV declared length before use. Add\nexplicit length checks for SDREQ (>= 1) and SDRES (exactly 2).\n\nFound by 0sec automated security-research tooling (https://0sec.ai).","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:17","updated_at":"2026-09-17 17:17:17"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/eeb16fb24cfe67947b832fd9ada5f488afc72579","name":"https://git.kernel.org/stable/c/eeb16fb24cfe67947b832fd9ada5f488afc72579","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/02030f95820c42431280f4f945ff34247fb840ff","name":"https://git.kernel.org/stable/c/02030f95820c42431280f4f945ff34247fb840ff","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f4c7f37f0ab990952539dc68d931d65c3657600a","name":"https://git.kernel.org/stable/c/f4c7f37f0ab990952539dc68d931d65c3657600a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/749a9048bf51a668ec3ab6c0392ba32325607281","name":"https://git.kernel.org/stable/c/749a9048bf51a668ec3ab6c0392ba32325607281","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f04ac9bf2379f3e2470c400c235eb12f74891bef","name":"https://git.kernel.org/stable/c/f04ac9bf2379f3e2470c400c235eb12f74891bef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/99fdb5c2522f365efa199d0117b641e35097041e","name":"https://git.kernel.org/stable/c/99fdb5c2522f365efa199d0117b641e35097041e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/88b36d36e12c9ba76decdb580d9c1907c084e587","name":"https://git.kernel.org/stable/c/88b36d36e12c9ba76decdb580d9c1907c084e587","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/587fc2a5a35b41883b22b8f808fe5d345208914b","name":"https://git.kernel.org/stable/c/587fc2a5a35b41883b22b8f808fe5d345208914b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90223","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90223","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 19cfe5843e86cc95542d9d875c9386e197956d75 88b36d36e12c9ba76decdb580d9c1907c084e587 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 19cfe5843e86cc95542d9d875c9386e197956d75 587fc2a5a35b41883b22b8f808fe5d345208914b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 19cfe5843e86cc95542d9d875c9386e197956d75 f04ac9bf2379f3e2470c400c235eb12f74891bef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 19cfe5843e86cc95542d9d875c9386e197956d75 02030f95820c42431280f4f945ff34247fb840ff git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/nfc/llcp_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"88b36d36e12c9ba76decdb580d9c1907c084e587","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"587fc2a5a35b41883b22b8f808fe5d345208914b","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"f04ac9bf2379f3e2470c400c235eb12f74891bef","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"02030f95820c42431280f4f945ff34247fb840ff","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"99fdb5c2522f365efa199d0117b641e35097041e","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"749a9048bf51a668ec3ab6c0392ba32325607281","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"eeb16fb24cfe67947b832fd9ada5f488afc72579","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"},{"lessThan":"f4c7f37f0ab990952539dc68d931d65c3657600a","status":"affected","version":"19cfe5843e86cc95542d9d875c9386e197956d75","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/nfc/llcp_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.8"},{"lessThan":"3.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.270","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.270","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: bound SNL TLV parsing to the skb and add length checks\n\nnfc_llcp_recv_snl() walked the SNL TLV list using a u16 offset/length\npair derived from skb->len, without bounding reads to the actual skb\ndata. Three problems followed:\n\n  - For a short frame (skb->len < LLCP_HEADER_SIZE), tlv_len underflowed.\n  - The per-TLV header (type, length) was read without checking that two\n    bytes remained.\n  - A declared TLV length could run past the end of the buffer, and an\n    SDREQ with length == 0 made \"service_name_len = length - 1\" underflow\n    (size_t), driving an out-of-bounds read in the following strncmp() /\n    nfc_llcp_sock_from_sn(). The SDRES case likewise read tlv[2]/tlv[3]\n    without a length check.\n\nA nearby NFC device can reach this without authentication; LLCP link\nactivation happens automatically after NFC-DEP.\n\nWalk the TLV list by pointer, bounded by skb_tail_pointer() over the\nlinear skb data, and validate each TLV declared length before use. Add\nexplicit length checks for SDREQ (>= 1) and SDRES (exactly 2).\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:07:33.355Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/88b36d36e12c9ba76decdb580d9c1907c084e587"},{"url":"https://git.kernel.org/stable/c/587fc2a5a35b41883b22b8f808fe5d345208914b"},{"url":"https://git.kernel.org/stable/c/f04ac9bf2379f3e2470c400c235eb12f74891bef"},{"url":"https://git.kernel.org/stable/c/02030f95820c42431280f4f945ff34247fb840ff"},{"url":"https://git.kernel.org/stable/c/99fdb5c2522f365efa199d0117b641e35097041e"},{"url":"https://git.kernel.org/stable/c/749a9048bf51a668ec3ab6c0392ba32325607281"},{"url":"https://git.kernel.org/stable/c/eeb16fb24cfe67947b832fd9ada5f488afc72579"},{"url":"https://git.kernel.org/stable/c/f4c7f37f0ab990952539dc68d931d65c3657600a"}],"title":"nfc: llcp: bound SNL TLV parsing to the skb and add length checks","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90223","datePublished":"2026-09-17T16:07:33.355Z","dateReserved":"2026-09-11T19:38:34.794Z","dateUpdated":"2026-09-17T16:07:33.355Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:17","lastModifiedDate":"2026-09-17 17:17:17","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90223","Ordinal":"1","Title":"nfc: llcp: bound SNL TLV parsing to the skb and add length check","CVE":"CVE-2026-90223","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90223","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: bound SNL TLV parsing to the skb and add length checks\n\nnfc_llcp_recv_snl() walked the SNL TLV list using a u16 offset/length\npair derived from skb->len, without bounding reads to the actual skb\ndata. Three problems followed:\n\n  - For a short frame (skb->len < LLCP_HEADER_SIZE), tlv_len underflowed.\n  - The per-TLV header (type, length) was read without checking that two\n    bytes remained.\n  - A declared TLV length could run past the end of the buffer, and an\n    SDREQ with length == 0 made \"service_name_len = length - 1\" underflow\n    (size_t), driving an out-of-bounds read in the following strncmp() /\n    nfc_llcp_sock_from_sn(). The SDRES case likewise read tlv[2]/tlv[3]\n    without a length check.\n\nA nearby NFC device can reach this without authentication; LLCP link\nactivation happens automatically after NFC-DEP.\n\nWalk the TLV list by pointer, bounded by skb_tail_pointer() over the\nlinear skb data, and validate each TLV declared length before use. Add\nexplicit length checks for SDREQ (>= 1) and SDRES (exactly 2).\n\nFound by 0sec automated security-research tooling (https://0sec.ai).","Type":"Description","Title":"nfc: llcp: bound SNL TLV parsing to the skb and add length check"}]}}}