{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ccf74f2390d60a2f9a75ef496d2564abb478f46a"
            },
            {
              "fixed": "2387cd06a2c0b416f05028b02bba1089f54c28d9"
            },
            {
              "fixed": "49fd7116f76b860b230843700fb7423ab5331e1f"
            },
            {
              "fixed": "03288b7447c9e572f8ab82fc29cfb4ca719ab210"
            },
            {
              "fixed": "560bef609fa5992745929e8d7d458b9d88dd2830"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80914.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix use-after-free of listener socket in iso_conn_ready\n\niso_conn_ready() looks up the BIS listener socket with iso_get_sock(),\nwhich takes a reference, and then, without re-checking its state,\ncreates a child socket from it:\n\n    parent = iso_get_sock(hdev, ...);\n    if (!parent)\n        return;\n\n    lock_sock(parent);\n    sk = iso_sock_alloc(sock_net(parent), NULL, BTPROTO_ISO, ...);\n    ...\n    iso_chan_add(conn, sk, parent);\n    ...\n    release_sock(parent);\n    sock_put(parent);\n\nIf the listener socket is closed concurrently, between iso_get_sock()\nand lock_sock(), the reference taken by iso_get_sock() may be the last\none: the close path drops the link-list reference, and once\niso_conn_ready() drops its own reference at the end of the function the\nsocket is freed.  The child socket, however, is already linked to the\nfreed parent, and a later disconnect of the child runs iso_chan_del()\n-\u003e bt_accept_unlink(), which dereferences the dangling parent pointer\ninto the freed accept queue (a use-after-free).  The same dangling\npointer is also dereferenced through parent-\u003e***() in\niso_chan_del().\n\nFix it the same way the connected (non-BIS) path was fixed in commit\n0d255e63fcf3 (\"Bluetooth: ISO: hold sk properly in iso_conn_ready\"):\nafter taking the socket lock, re-check that the parent is still a\nlistening, alive socket, and bail out otherwise.",
  "id": "CVE-2026-80914",
  "modified": "2026-09-11T03:30:48.199042015Z",
  "published": "2026-09-09T16:10:58.675Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03288b7447c9e572f8ab82fc29cfb4ca719ab210"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2387cd06a2c0b416f05028b02bba1089f54c28d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49fd7116f76b860b230843700fb7423ab5331e1f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/560bef609fa5992745929e8d7d458b9d88dd2830"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80914.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80914"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: ISO: fix use-after-free of listener socket in iso_conn_ready"
}