Answer in brief
CVE-2026-80795 records a Unknown severity vulnerability in nfc: nci: fix out-of-bounds write in nci_target_auto_activated(). 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 | >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <0dc59de0075f88404a0f4a2b5233104ef459fbb2 || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <94530ffabfca57e9bff1d207106010014cc84032 || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <afd8605fb43becb892311102844955c3b127fc7e || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <24761d3a5f692df5f7d848caeabcb2afd10917aa || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951 || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <2f08dbce3b37624ec6b424d759336a99586170ec || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <d7083f41c21b30582e91b2e6de4d54dce74f6f9c || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <129032c0616d83a5e3e304f6ebf88f14ba01e5f7 || >=019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5 <ac200079db50af81e6b04d058b33ec92901d8edd | 0dc59de0075f88404a0f4a2b5233104ef459fbb2, 94530ffabfca57e9bff1d207106010014cc84032, afd8605fb43becb892311102844955c3b127fc7e, 24761d3a5f692df5f7d848caeabcb2afd10917aa, 50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951, 2f08dbce3b37624ec6b424d759336a99586170ec, d7083f41c21b30582e91b2e6de4d54dce74f6f9c, 129032c0616d83a5e3e304f6ebf88f14ba01e5f7, ac200079db50af81e6b04d058b33ec92901d8edd |
| Linux/Linuxgeneric | 3.4 | 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 out-of-bounds write in nci_target_auto_activated() nci_target_auto_activated() appends a target to the fixed-size array ndev->targets[NCI_MAX_DISCOVERED_TARGETS] and increments ndev->n_targets without first checking the array is full; unlike its sibling nci_add_new_target(), which bails out when n_targets already equals NCI_MAX_DISCOVERED_TARGETS. ndev->n_targets is only cleared by nci_clear_target_list(), so an NFCC that repeatedly re-runs discovery (RF_DISCOVER_RSP, which re-enters NCI_DISCOVERY without clearing the target list) and reports an auto-activated target (RF_INTF_ACTIVATED_NTF) drives n_targets past the limit. The append then writes a struct nfc_target past the end of the array (a slab out-of-bounds write), and nfc_targets_found() goes on to walk the array with the inflated count: BUG: KASAN: slab-out-of-bounds in nci_add_new_protocol+0x94/0x2ac [nci] Write of size 2 at addr ffff0000c7299a18 by task kworker/u8:0/12 Workqueue: nfc0_nci_rx_wq nci_rx_work [nci] Call trace: nci_add_new_protocol+0x94/0x2ac [nci] nci_ntf_packet+0xddc/0x11a0 [nci] nci_rx_work+0x15c/0x1e0 [nci] process_one_work+0x2dc/0x500 worker_thread+0x240/0x460 kthread+0x1c0/0x1d0 ret_from_fork+0x10/0x20 The buggy address belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1024 bytes to the right of allocated 1560-byte region [ffff0000c7299000, ffff0000c7299618) Guard nci_target_auto_activated() with the same check used by nci_add_new_target().
Quoted source text, attributed separately from HOL analysis.