{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80794","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.793Z","datePublished":"2026-09-04T15:13:07.169Z","dateUpdated":"2026-09-04T15:13:07.169Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-04T15:13:07.169Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/ntf.c"],"versions":[{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"1007a6b429d756513abd25bd00290908f2e89a4a","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"4bda9ef8392710f21e99027467f3f4afdfb5c99a","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"fe69fed3495f676578d49414a069ad7d8468e2ce","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"7489f59d1ea2d3298aa41de7baf193e5e6e132f6","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"7086dab72b3ed95df96842801e10e935cfeb27a3","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"0d4b5cfab6891a5ca0f6aef209beebba4bd7c095","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"5bd00c0e1470d90d77a7c60242854257ddf14e00","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"d6f743d3d388913135681cde051c08823730194f","status":"affected","versionType":"git"},{"version":"e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20","lessThan":"8cbe06c1e699c0a165dae5093a2550e65f914818","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/ntf.c"],"versions":[{"version":"3.3","status":"affected"},{"version":"0","lessThan":"3.3","status":"unaffected","versionType":"semver"},{"version":"5.10.269","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.218","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.185","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.154","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.106","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.47","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.11","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2.1","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.10.269"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.15.218"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.1.185"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.6.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.12.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.18.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"7.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"7.2.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"7.3-rc1"}]}]}],"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"}}}}