{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.187-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.107-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux-6.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.107-1~deb12u1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "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-\u003etargets[NCI_MAX_DISCOVERED_TARGETS] and increments ndev-\u003en_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-\u003en_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().",
  "id": "DEBIAN-CVE-2026-80795",
  "modified": "2026-09-19T21:47:31.611289181Z",
  "published": "2026-09-04T16:18:06.020Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80795"
    }
  ],
  "upstream": [
    "CVE-2026-80795"
  ]
}