{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "019c4fbaa790e2b3f11dab0c8b7d9896d77db3e5"
            },
            {
              "fixed": "0dc59de0075f88404a0f4a2b5233104ef459fbb2"
            },
            {
              "fixed": "94530ffabfca57e9bff1d207106010014cc84032"
            },
            {
              "fixed": "afd8605fb43becb892311102844955c3b127fc7e"
            },
            {
              "fixed": "24761d3a5f692df5f7d848caeabcb2afd10917aa"
            },
            {
              "fixed": "50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951"
            },
            {
              "fixed": "2f08dbce3b37624ec6b424d759336a99586170ec"
            },
            {
              "fixed": "d7083f41c21b30582e91b2e6de4d54dce74f6f9c"
            },
            {
              "fixed": "129032c0616d83a5e3e304f6ebf88f14ba01e5f7"
            },
            {
              "fixed": "ac200079db50af81e6b04d058b33ec92901d8edd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.4.0"
            },
            {
              "fixed": "5.10.267"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.218"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.185"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.154"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.106"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.47"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.11"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80795.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix out-of-bounds write in nci_target_auto_activated()\n\nnci_target_auto_activated() appends a target to the fixed-size array\nndev-\u003etargets[NCI_MAX_DISCOVERED_TARGETS] and increments ndev-\u003en_targets\nwithout first checking the array is full; unlike its sibling\nnci_add_new_target(), which bails out when n_targets already equals\nNCI_MAX_DISCOVERED_TARGETS.\n\nndev-\u003en_targets is only cleared by nci_clear_target_list(), so an NFCC\nthat repeatedly re-runs discovery (RF_DISCOVER_RSP, which re-enters\nNCI_DISCOVERY without clearing the target list) and reports an\nauto-activated target (RF_INTF_ACTIVATED_NTF) drives n_targets past the\nlimit. The append then writes a struct nfc_target past the end of the\narray (a slab out-of-bounds write), and nfc_targets_found() goes on to\nwalk the array with the inflated count:\n\n  BUG: KASAN: slab-out-of-bounds in nci_add_new_protocol+0x94/0x2ac [nci]\n  Write of size 2 at addr ffff0000c7299a18 by task kworker/u8:0/12\n  Workqueue: nfc0_nci_rx_wq nci_rx_work [nci]\n  Call trace:\n   nci_add_new_protocol+0x94/0x2ac [nci]\n   nci_ntf_packet+0xddc/0x11a0 [nci]\n   nci_rx_work+0x15c/0x1e0 [nci]\n   process_one_work+0x2dc/0x500\n   worker_thread+0x240/0x460\n   kthread+0x1c0/0x1d0\n   ret_from_fork+0x10/0x20\n\n  The buggy address belongs to the cache kmalloc-2k of size 2048\n  The buggy address is located 1024 bytes to the right of\n  allocated 1560-byte region [ffff0000c7299000, ffff0000c7299618)\n\nGuard nci_target_auto_activated() with the same check used by\nnci_add_new_target().",
  "id": "CVE-2026-80795",
  "modified": "2026-09-06T03:30:57.671503971Z",
  "published": "2026-09-04T15:13:08.640Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0dc59de0075f88404a0f4a2b5233104ef459fbb2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/129032c0616d83a5e3e304f6ebf88f14ba01e5f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24761d3a5f692df5f7d848caeabcb2afd10917aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f08dbce3b37624ec6b424d759336a99586170ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50e87e1c0e18d791dcd7dccf30f9a2f3e2cf3951"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94530ffabfca57e9bff1d207106010014cc84032"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac200079db50af81e6b04d058b33ec92901d8edd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afd8605fb43becb892311102844955c3b127fc7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7083f41c21b30582e91b2e6de4d54dce74f6f9c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80795.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80795"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nfc: nci: fix out-of-bounds write in nci_target_auto_activated()"
}