{ "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": "2026-10-19T08:43:47.481Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:47.481Z" }, "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", "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" } ] } ] } ], "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" } } } }