{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-68289",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-68289"
  ],
  "published": "2026-08-10T12:08:00Z",
  "summary": "tipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix integer overflow in tipc_recvmsg() and tipc_recvstream()\n\nIn tipc_recvmsg(), the copy length is computed as:\n\n  copy = min_t(int, dlen - offset, buflen);\n\nbuflen is size_t but min_t(int, ...) casts it to int. When buflen\nexceeds INT_MAX (e.g. 0xFFFFFFFF via io_uring provided buffers), it\nwraps negative, wins the comparison, and the negative copy length\npropagates to simple_copy_to_iter() where int-to-size_t promotion\nmakes it SIZE_MAX, triggering a WARN_ON. tipc_recvstream() has the\nsame pattern.\n\n  Kernel panic - not syncing: kernel: panic_on_warn set ...\n  RIP: 0010:simple_copy_to_iter+0x9e/0xd0 (net/core/datagram.c:521)\n  Call Trace:\n   __skb_datagram_iter+0x123/0x8b0 (net/core/datagram.c:402)\n   skb_copy_datagram_iter+0x77/0x1a0 (net/core/datagram.c:534)\n   tipc_recvmsg+0x3d7/0xe80 (net/tipc/socket.c:1934)\n   io_recvmsg+0x47e/0xda0\n\nFix by changing min_t(int, ...) to min_t(size_t, ...) in both\nfunctions. The result is always <= (dlen - offset), which is bounded\nby TIPC maximum message size (0x1ffff bytes), so the implicit\nnarrowing on assignment to int copy is always safe.",
  "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": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-68289"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9fd4f92671146b068809b6c34b50346cb30cf8f7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/93580911f02d1f4a506ec0a6fc4354140c53ffe8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1b6066313b9b8fac870483bf7a26d6bd56579747"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7364014fdc289225229eb08de8bcbf4580e78e4d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fe9bf32bb18f2d35789d4960fb007d1059bbaa38"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/47f42ff521b4eeb46e82f9a46a4783a99f7570d7"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-03T11:04:09Z"
  }
}