CVE-2026-80794

{"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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-80794", "lastModified": "2026-10-19T09:17:13.610", "metrics": {}, "published": "2026-09-04T16:18:05.767", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d4b5cfab6891a5ca0f6aef209beebba4bd7c095"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1007a6b429d756513abd25bd00290908f2e89a4a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4bda9ef8392710f21e99027467f3f4afdfb5c99a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5bd00c0e1470d90d77a7c60242854257ddf14e00"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7086dab72b3ed95df96842801e10e935cfeb27a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7489f59d1ea2d3298aa41de7baf193e5e6e132f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8cbe06c1e699c0a165dae5093a2550e65f914818"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6f743d3d388913135681cde051c08823730194f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe69fed3495f676578d49414a069ad7d8468e2ce"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20,1007a6b429d756513abd25bd00290908f2e89a4a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1007a6b429d756513abd25bd00290908f2e89a4a,4bda9ef8392710f21e99027467f3f4afdfb5c99a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4bda9ef8392710f21e99027467f3f4afdfb5c99a,5bd00c0e1470d90d77a7c60242854257ddf14e00)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5bd00c0e1470d90d77a7c60242854257ddf14e00,7086dab72b3ed95df96842801e10e935cfeb27a3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7086dab72b3ed95df96842801e10e935cfeb27a3,7489f59d1ea2d3298aa41de7baf193e5e6e132f6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7489f59d1ea2d3298aa41de7baf193e5e6e132f6,0d4b5cfab6891a5ca0f6aef209beebba4bd7c095)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0d4b5cfab6891a5ca0f6aef209beebba4bd7c095,5bd00c0e1470d90d77a7c60242854257ddf14e00)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5bd00c0e1470d90d77a7c60242854257ddf14e00,d6f743d3d388913135681cde051c08823730194f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d6f743d3d388913135681cde051c08823730194f,8cbe06c1e699c0a165dae5093a2550e65f914818)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.269,5.11.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.218,5.16.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.185,6.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.154,6.7.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.106,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.47,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.11,7.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.1,7.3.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-04T18:45:02.769716+00:00", "updated": "2026-09-04T21:30:07.588777+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-788"]}