{"api_version":"1","generated_at":"2026-09-21T16:16:00+00:00","cve":"CVE-2026-90225","urls":{"html":"https://cve.report/CVE-2026-90225","api":"https://cve.report/api/cve/CVE-2026-90225.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90225","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90225"},"summary":{"title":"nfc: llcp: read llcp_sock->local under the socket lock in getsockopt","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: read llcp_sock->local under the socket lock in getsockopt\n\nnfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and\nthen dereferenced the cached pointer inside the locked region.\nllcp_sock_bind() assigns and clears llcp_sock->local under the same\nsocket lock, dropping the last reference on its error path. A\ngetsockopt() racing an in-flight bind() can observe the pointer, block\non lock_sock(), and then dereference a freed nfc_llcp_local once bind()\nhas unwound.\n\nMove the llcp_sock->local read and the NULL check inside the\nlock_sock(sk) region so bind() cannot mutate or free the pointer between\nthe load and the use.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:18","updated_at":"2026-09-18 18:17:47"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/ed5240bab3468988077fe8bf29b935eaecc9ff89","name":"https://git.kernel.org/stable/c/ed5240bab3468988077fe8bf29b935eaecc9ff89","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe65727a4a21b11c18eebae1338482767a897b76","name":"https://git.kernel.org/stable/c/fe65727a4a21b11c18eebae1338482767a897b76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/56fd158fef20268f48db6cdfe5d722e930134eda","name":"https://git.kernel.org/stable/c/56fd158fef20268f48db6cdfe5d722e930134eda","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d1b73962675cdc5a58e2707e25b548d8b495fde0","name":"https://git.kernel.org/stable/c/d1b73962675cdc5a58e2707e25b548d8b495fde0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/156e65bd29307f5053835bff60bc1ba342fa010f","name":"https://git.kernel.org/stable/c/156e65bd29307f5053835bff60bc1ba342fa010f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/36812527052c5bfb1ec6c1e292d67a5bf76b750f","name":"https://git.kernel.org/stable/c/36812527052c5bfb1ec6c1e292d67a5bf76b750f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8ba8cec0586727cc135ca4827921fc7b52946d71","name":"https://git.kernel.org/stable/c/8ba8cec0586727cc135ca4827921fc7b52946d71","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2d8ac24565be85bf56580b87bf1b874d35625eb5","name":"https://git.kernel.org/stable/c/2d8ac24565be85bf56580b87bf1b874d35625eb5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90225","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90225","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 56fd158fef20268f48db6cdfe5d722e930134eda git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 8ba8cec0586727cc135ca4827921fc7b52946d71 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 ed5240bab3468988077fe8bf29b935eaecc9ff89 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 fe65727a4a21b11c18eebae1338482767a897b76 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 2d8ac24565be85bf56580b87bf1b874d35625eb5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 156e65bd29307f5053835bff60bc1ba342fa010f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 d1b73962675cdc5a58e2707e25b548d8b495fde0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 36812527052c5bfb1ec6c1e292d67a5bf76b750f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.270 5.10.* 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":{"cve_year":"2026","cve_id":"90225","cve":"CVE-2026-90225","epss":"0.001640000","percentile":"0.060450000","score_date":"2026-09-20","updated_at":"2026-09-21 00:10:09"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/nfc/llcp_sock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"56fd158fef20268f48db6cdfe5d722e930134eda","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"8ba8cec0586727cc135ca4827921fc7b52946d71","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"ed5240bab3468988077fe8bf29b935eaecc9ff89","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"fe65727a4a21b11c18eebae1338482767a897b76","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"2d8ac24565be85bf56580b87bf1b874d35625eb5","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"156e65bd29307f5053835bff60bc1ba342fa010f","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"d1b73962675cdc5a58e2707e25b548d8b495fde0","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"},{"lessThan":"36812527052c5bfb1ec6c1e292d67a5bf76b750f","status":"affected","version":"26fd76cab2e61cedc5c25f7151fb31b57ddc53c7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/nfc/llcp_sock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.10"},{"lessThan":"3.10","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":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"3.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: read llcp_sock->local under the socket lock in getsockopt\n\nnfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and\nthen dereferenced the cached pointer inside the locked region.\nllcp_sock_bind() assigns and clears llcp_sock->local under the same\nsocket lock, dropping the last reference on its error path. A\ngetsockopt() racing an in-flight bind() can observe the pointer, block\non lock_sock(), and then dereference a freed nfc_llcp_local once bind()\nhas unwound.\n\nMove the llcp_sock->local read and the NULL check inside the\nlock_sock(sk) region so bind() cannot mutate or free the pointer between\nthe load and the use."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - The UAF is triggered by racing local syscalls on an AF_NFC LLCP socket: getsockopt(2) (__sys_getsockopt → do_sock_getsockopt → nfc_llcp_getsockopt) against bind(2) (__sys_bind → llcp_sock_bind). No LLCP PDU or other NFC-peer bytes are consumed on this path, so an adjacent radio peer cannot drive it.\nAC:L - The attacker owns both sides of the lock_sock(sk) race: one thread calls bind() with service_name_len 0 so nfc_llcp_get_sdp_ssap() returns LLCP_SAP_MAX after llcp_sock->local is stored, and another calls getsockopt(SOL_NFC, NFC_LLCP_RW) on the same socket, which used to snapshot that pointer before taking the lock.\nPR:L - llcp_sock_create() checks capable(CAP_NET_RAW) only for SOCK_RAW; nfc_llcp_getsockopt is on llcp_sock_ops for SOCK_STREAM/DGRAM. An unprivileged user in init_net can socket(AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP) then bind/getsockopt. nfc_llcp_find_local() needs a registered NFC device, which is typical on phones.\nUI:N - The attacker creates the AF_NFC LLCP socket and issues bind() and getsockopt() on that fd themselves; no other user needs to tap a tag, mount media, or accept a connection.\nS:U - The freed object is the host kernel's kmalloc'd nfc_llcp_local used by nfc_llcp_getsockopt(); impact stays inside the kernel's security authority, not a VM, IOMMU, or sandbox escape.\nC:H - nfc_llcp_getsockopt() dereferences the dangling nfc_llcp_local to read local->rw, local->miux, local->remote_miu, and local->remote_lto and copies those values to userspace with put_user(), so reclaim of the freed slab yields an arbitrary-read primitive.\nI:H - llcp_sock_bind()'s sock_llcp_put_local path drops nfc_llcp_local via nfc_llcp_local_put() while nfc_llcp_getsockopt() still holds the pointer; reclaiming that kmalloc object with attacker-controlled data turns the dangling local into a write/control-flow primitive.\nA:H - Using the freed nfc_llcp_local in nfc_llcp_getsockopt() (the local->rw and local->remote_lto loads) is a kernel slab UAF that oopses or panics on KASAN/SLUB_DEBUG and can crash the system even when not fully exploited."}]}],"providerMetadata":{"dateUpdated":"2026-09-18T17:53:52.374Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/56fd158fef20268f48db6cdfe5d722e930134eda"},{"url":"https://git.kernel.org/stable/c/8ba8cec0586727cc135ca4827921fc7b52946d71"},{"url":"https://git.kernel.org/stable/c/ed5240bab3468988077fe8bf29b935eaecc9ff89"},{"url":"https://git.kernel.org/stable/c/fe65727a4a21b11c18eebae1338482767a897b76"},{"url":"https://git.kernel.org/stable/c/2d8ac24565be85bf56580b87bf1b874d35625eb5"},{"url":"https://git.kernel.org/stable/c/156e65bd29307f5053835bff60bc1ba342fa010f"},{"url":"https://git.kernel.org/stable/c/d1b73962675cdc5a58e2707e25b548d8b495fde0"},{"url":"https://git.kernel.org/stable/c/36812527052c5bfb1ec6c1e292d67a5bf76b750f"}],"title":"nfc: llcp: read llcp_sock->local under the socket lock in getsockopt","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90225","datePublished":"2026-09-17T16:07:34.658Z","dateReserved":"2026-09-11T19:38:34.794Z","dateUpdated":"2026-09-18T17:53:52.374Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:18","lastModifiedDate":"2026-09-18 18:17:47","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90225","Ordinal":"1","Title":"nfc: llcp: read llcp_sock->local under the socket lock in getsoc","CVE":"CVE-2026-90225","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90225","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: read llcp_sock->local under the socket lock in getsockopt\n\nnfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and\nthen dereferenced the cached pointer inside the locked region.\nllcp_sock_bind() assigns and clears llcp_sock->local under the same\nsocket lock, dropping the last reference on its error path. A\ngetsockopt() racing an in-flight bind() can observe the pointer, block\non lock_sock(), and then dereference a freed nfc_llcp_local once bind()\nhas unwound.\n\nMove the llcp_sock->local read and the NULL check inside the\nlock_sock(sk) region so bind() cannot mutate or free the pointer between\nthe load and the use.","Type":"Description","Title":"nfc: llcp: read llcp_sock->local under the socket lock in getsoc"}]}}}