{"api_version":"1","generated_at":"2026-09-11T03:53:32+00:00","cve":"CVE-2026-80794","urls":{"html":"https://cve.report/CVE-2026-80794","api":"https://cve.report/api/cve/CVE-2026-80794.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80794","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80794"},"summary":{"title":"nfc: nci: fix uninit-value in the RF discover/activated NTF handlers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix uninit-value in the RF discover/activated NTF handlers\n\nnci_rf_discover_ntf_packet() and nci_rf_intf_activated_ntf_packet() each\nparse a notification into an on-stack struct (nci_rf_discover_ntf /\nnci_rf_intf_activated_ntf) that is not initialised. The RF\ntechnology-specific parameters are only extracted when\nrf_tech_specific_params_len is non-zero, so a notification that reports a\nzero length leaves the rf_tech_specific_params union uninitialised - and\nboth handlers then pass it to nci_add_new_protocol(), which reads it:\n\n - discover:  nci_add_new_target() -> nci_add_new_protocol();\n - activated: nci_target_auto_activated() -> nci_add_new_protocol().\n\nnci_add_new_protocol() uses nfca_poll->nfcid1_len as both a branch\ncondition and a memcpy() length and copies nfcid1/sens_res/sel_res into\nndev->targets, which is later exposed to user space via NFC_CMD_GET_TARGET.\n\n  BUG: KMSAN: uninit-value in nci_add_new_protocol+0x624/0x6c0\n   nci_add_new_protocol+0x624/0x6c0\n   nci_ntf_packet+0x25b2/0x3c30\n   nci_rx_work+0x318/0x5d0\n   process_scheduled_works+0x84b/0x17a0\n   worker_thread+0xc10/0x11b0\n   kthread+0x376/0x500\n  Local variable ntf.i created at:\n   nci_ntf_packet+0xbc2/0x3c30\n\nZero-initialise both on-stack notifications so the union reads back as\nzero when no technology-specific parameters are present.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:05","updated_at":"2026-09-04 16:18:05"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7086dab72b3ed95df96842801e10e935cfeb27a3","name":"https://git.kernel.org/stable/c/7086dab72b3ed95df96842801e10e935cfeb27a3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe69fed3495f676578d49414a069ad7d8468e2ce","name":"https://git.kernel.org/stable/c/fe69fed3495f676578d49414a069ad7d8468e2ce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0d4b5cfab6891a5ca0f6aef209beebba4bd7c095","name":"https://git.kernel.org/stable/c/0d4b5cfab6891a5ca0f6aef209beebba4bd7c095","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4bda9ef8392710f21e99027467f3f4afdfb5c99a","name":"https://git.kernel.org/stable/c/4bda9ef8392710f21e99027467f3f4afdfb5c99a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5bd00c0e1470d90d77a7c60242854257ddf14e00","name":"https://git.kernel.org/stable/c/5bd00c0e1470d90d77a7c60242854257ddf14e00","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7489f59d1ea2d3298aa41de7baf193e5e6e132f6","name":"https://git.kernel.org/stable/c/7489f59d1ea2d3298aa41de7baf193e5e6e132f6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1007a6b429d756513abd25bd00290908f2e89a4a","name":"https://git.kernel.org/stable/c/1007a6b429d756513abd25bd00290908f2e89a4a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8cbe06c1e699c0a165dae5093a2550e65f914818","name":"https://git.kernel.org/stable/c/8cbe06c1e699c0a165dae5093a2550e65f914818","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d6f743d3d388913135681cde051c08823730194f","name":"https://git.kernel.org/stable/c/d6f743d3d388913135681cde051c08823730194f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80794","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80794","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 1007a6b429d756513abd25bd00290908f2e89a4a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 4bda9ef8392710f21e99027467f3f4afdfb5c99a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 fe69fed3495f676578d49414a069ad7d8468e2ce git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 7489f59d1ea2d3298aa41de7baf193e5e6e132f6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 7086dab72b3ed95df96842801e10e935cfeb27a3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 0d4b5cfab6891a5ca0f6aef209beebba4bd7c095 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 5bd00c0e1470d90d77a7c60242854257ddf14e00 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 d6f743d3d388913135681cde051c08823730194f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 8cbe06c1e699c0a165dae5093a2550e65f914818 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.269 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.218 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.185 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.154 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.106 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.47 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.11 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.1 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":"80794","cve":"CVE-2026-80794","epss":"0.001950000","percentile":"0.092850000","score_date":"2026-09-07","updated_at":"2026-09-08 00:05:27"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/nfc/nci/ntf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1007a6b429d756513abd25bd00290908f2e89a4a","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"4bda9ef8392710f21e99027467f3f4afdfb5c99a","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"fe69fed3495f676578d49414a069ad7d8468e2ce","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"7489f59d1ea2d3298aa41de7baf193e5e6e132f6","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"7086dab72b3ed95df96842801e10e935cfeb27a3","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"0d4b5cfab6891a5ca0f6aef209beebba4bd7c095","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"5bd00c0e1470d90d77a7c60242854257ddf14e00","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"d6f743d3d388913135681cde051c08823730194f","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"},{"lessThan":"8cbe06c1e699c0a165dae5093a2550e65f914818","status":"affected","version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/nfc/nci/ntf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.3"},{"lessThan":"3.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.269","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.218","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.185","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.154","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.106","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.47","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.11","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.1","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":"5.10.269","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.218","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.185","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.154","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.106","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.47","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.11","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.1","versionStartIncluding":"3.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix uninit-value in the RF discover/activated NTF handlers\n\nnci_rf_discover_ntf_packet() and nci_rf_intf_activated_ntf_packet() each\nparse a notification into an on-stack struct (nci_rf_discover_ntf /\nnci_rf_intf_activated_ntf) that is not initialised. The RF\ntechnology-specific parameters are only extracted when\nrf_tech_specific_params_len is non-zero, so a notification that reports a\nzero length leaves the rf_tech_specific_params union uninitialised - and\nboth handlers then pass it to nci_add_new_protocol(), which reads it:\n\n - discover:  nci_add_new_target() -> nci_add_new_protocol();\n - activated: nci_target_auto_activated() -> nci_add_new_protocol().\n\nnci_add_new_protocol() uses nfca_poll->nfcid1_len as both a branch\ncondition and a memcpy() length and copies nfcid1/sens_res/sel_res into\nndev->targets, which is later exposed to user space via NFC_CMD_GET_TARGET.\n\n  BUG: KMSAN: uninit-value in nci_add_new_protocol+0x624/0x6c0\n   nci_add_new_protocol+0x624/0x6c0\n   nci_ntf_packet+0x25b2/0x3c30\n   nci_rx_work+0x318/0x5d0\n   process_scheduled_works+0x84b/0x17a0\n   worker_thread+0xc10/0x11b0\n   kthread+0x376/0x500\n  Local variable ntf.i created at:\n   nci_ntf_packet+0xbc2/0x3c30\n\nZero-initialise both on-stack notifications so the union reads back as\nzero when no technology-specific parameters are present."}],"providerMetadata":{"dateUpdated":"2026-09-04T15:13:07.169Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1007a6b429d756513abd25bd00290908f2e89a4a"},{"url":"https://git.kernel.org/stable/c/4bda9ef8392710f21e99027467f3f4afdfb5c99a"},{"url":"https://git.kernel.org/stable/c/fe69fed3495f676578d49414a069ad7d8468e2ce"},{"url":"https://git.kernel.org/stable/c/7489f59d1ea2d3298aa41de7baf193e5e6e132f6"},{"url":"https://git.kernel.org/stable/c/7086dab72b3ed95df96842801e10e935cfeb27a3"},{"url":"https://git.kernel.org/stable/c/0d4b5cfab6891a5ca0f6aef209beebba4bd7c095"},{"url":"https://git.kernel.org/stable/c/5bd00c0e1470d90d77a7c60242854257ddf14e00"},{"url":"https://git.kernel.org/stable/c/d6f743d3d388913135681cde051c08823730194f"},{"url":"https://git.kernel.org/stable/c/8cbe06c1e699c0a165dae5093a2550e65f914818"}],"title":"nfc: nci: fix uninit-value in the RF discover/activated NTF handlers","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80794","datePublished":"2026-09-04T15:13:07.169Z","dateReserved":"2026-08-26T14:34:25.793Z","dateUpdated":"2026-09-04T15:13:07.169Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:05","lastModifiedDate":"2026-09-04 16:18:05","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80794","Ordinal":"1","Title":"nfc: nci: fix uninit-value in the RF discover/activated NTF hand","CVE":"CVE-2026-80794","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80794","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix uninit-value in the RF discover/activated NTF handlers\n\nnci_rf_discover_ntf_packet() and nci_rf_intf_activated_ntf_packet() each\nparse a notification into an on-stack struct (nci_rf_discover_ntf /\nnci_rf_intf_activated_ntf) that is not initialised. The RF\ntechnology-specific parameters are only extracted when\nrf_tech_specific_params_len is non-zero, so a notification that reports a\nzero length leaves the rf_tech_specific_params union uninitialised - and\nboth handlers then pass it to nci_add_new_protocol(), which reads it:\n\n - discover:  nci_add_new_target() -> nci_add_new_protocol();\n - activated: nci_target_auto_activated() -> nci_add_new_protocol().\n\nnci_add_new_protocol() uses nfca_poll->nfcid1_len as both a branch\ncondition and a memcpy() length and copies nfcid1/sens_res/sel_res into\nndev->targets, which is later exposed to user space via NFC_CMD_GET_TARGET.\n\n  BUG: KMSAN: uninit-value in nci_add_new_protocol+0x624/0x6c0\n   nci_add_new_protocol+0x624/0x6c0\n   nci_ntf_packet+0x25b2/0x3c30\n   nci_rx_work+0x318/0x5d0\n   process_scheduled_works+0x84b/0x17a0\n   worker_thread+0xc10/0x11b0\n   kthread+0x376/0x500\n  Local variable ntf.i created at:\n   nci_ntf_packet+0xbc2/0x3c30\n\nZero-initialise both on-stack notifications so the union reads back as\nzero when no technology-specific parameters are present.","Type":"Description","Title":"nfc: nci: fix uninit-value in the RF discover/activated NTF hand"}]}}}