Answer in brief
CVE-2026-80794 records a Unknown severity vulnerability in nfc: nci: fix uninit-value in the RF discover/activated NTF handlers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <1007a6b429d756513abd25bd00290908f2e89a4a || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <4bda9ef8392710f21e99027467f3f4afdfb5c99a || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <fe69fed3495f676578d49414a069ad7d8468e2ce || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <7489f59d1ea2d3298aa41de7baf193e5e6e132f6 || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <7086dab72b3ed95df96842801e10e935cfeb27a3 || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <0d4b5cfab6891a5ca0f6aef209beebba4bd7c095 || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <5bd00c0e1470d90d77a7c60242854257ddf14e00 || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <d6f743d3d388913135681cde051c08823730194f || >=e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20 <8cbe06c1e699c0a165dae5093a2550e65f914818 | 1007a6b429d756513abd25bd00290908f2e89a4a, 4bda9ef8392710f21e99027467f3f4afdfb5c99a, fe69fed3495f676578d49414a069ad7d8468e2ce, 7489f59d1ea2d3298aa41de7baf193e5e6e132f6, 7086dab72b3ed95df96842801e10e935cfeb27a3, 0d4b5cfab6891a5ca0f6aef209beebba4bd7c095, 5bd00c0e1470d90d77a7c60242854257ddf14e00, d6f743d3d388913135681cde051c08823730194f, 8cbe06c1e699c0a165dae5093a2550e65f914818 |
| Linux/Linuxgeneric | 3.3 | Not reported |
Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 4, 2026
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: fix uninit-value in the RF discover/activated NTF handlers nci_rf_discover_ntf_packet() and nci_rf_intf_activated_ntf_packet() each parse a notification into an on-stack struct (nci_rf_discover_ntf / nci_rf_intf_activated_ntf) that is not initialised. The RF technology-specific parameters are only extracted when rf_tech_specific_params_len is non-zero, so a notification that reports a zero length leaves the rf_tech_specific_params union uninitialised - and both handlers then pass it to nci_add_new_protocol(), which reads it: - discover: nci_add_new_target() -> nci_add_new_protocol(); - activated: nci_target_auto_activated() -> nci_add_new_protocol(). nci_add_new_protocol() uses nfca_poll->nfcid1_len as both a branch condition and a memcpy() length and copies nfcid1/sens_res/sel_res into ndev->targets, which is later exposed to user space via NFC_CMD_GET_TARGET. BUG: KMSAN: uninit-value in nci_add_new_protocol+0x624/0x6c0 nci_add_new_protocol+0x624/0x6c0 nci_ntf_packet+0x25b2/0x3c30 nci_rx_work+0x318/0x5d0 process_scheduled_works+0x84b/0x17a0 worker_thread+0xc10/0x11b0 kthread+0x376/0x500 Local variable ntf.i created at: nci_ntf_packet+0xbc2/0x3c30 Zero-initialise both on-stack notifications so the union reads back as zero when no technology-specific parameters are present.
Quoted source text, attributed separately from HOL analysis.