{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-68397",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-68397"
  ],
  "published": "2026-08-10T12:08:00Z",
  "summary": "net/iucv: take a reference on the socket found in afiucv_hs_rcv()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/iucv: take a reference on the socket found in afiucv_hs_rcv()\n\nafiucv_hs_rcv() looks up the destination socket under iucv_sk_list.lock,\ndrops the lock, and then passes the socket to the afiucv_hs_callback_*()\nhandlers without holding a reference. AF_IUCV sockets are not\nRCU-protected and are freed synchronously by iucv_sock_kill() ->\nsock_put(), so a concurrent close can free the socket in the window\nbetween read_unlock() and the handler, which then dereferences freed\nmemory (for example sk->sk_data_ready() in afiucv_hs_callback_syn()).\n\nTake a reference with sock_hold() while the socket is still on the list\nand release it with sock_put() once the handler has run.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.183",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-68397"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5739be5c19495d709d902a2912c9102ce78740d5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bc6c6e546ffff8865daaeb622ef348c2d481e80f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e3e0679fc950191aff8f27fa78abcfc2462cff4a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4dc0e63abf8bc7ba8892e617c1fb8b204361e022"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1801cb20a5025a787d6853e19c38db138344b4b4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c75a950e77356e526672cba4584080c6c8b793b6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5595ea59cdf29182cf6a270cacc1426c57b603de"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4fa349156043dc119721d067329714179f501749"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-19T16:47:12Z"
  }
}