{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-53047",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-53047"
  ],
  "published": "2024-11-19T17:20:22Z",
  "summary": "mptcp: init: protect sched with rcu_read_lock",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: init: protect sched with rcu_read_lock\n\nEnabling CONFIG_PROVE_RCU_LIST with its dependence CONFIG_RCU_EXPERT\ncreates this splat when an MPTCP socket is created:\n\n  =============================\n  WARNING: suspicious RCU usage\n  6.12.0-rc2+ #11 Not tainted\n  -----------------------------\n  net/mptcp/sched.c:44 RCU-list traversed in non-reader section!!\n\n  other info that might help us debug this:\n\n  rcu_scheduler_active = 2, debug_locks = 1\n  no locks held by mptcp_connect/176.\n\n  stack backtrace:\n  CPU: 0 UID: 0 PID: 176 Comm: mptcp_connect Not tainted 6.12.0-rc2+ #11\n  Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n  Call Trace:\n   <TASK>\n   dump_stack_lvl (lib/dump_stack.c:123)\n   lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822)\n   mptcp_sched_find (net/mptcp/sched.c:44 (discriminator 7))\n   mptcp_init_sock (net/mptcp/protocol.c:2867 (discriminator 1))\n   ? sock_init_data_uid (arch/x86/include/asm/atomic.h:28)\n   inet_create.part.0.constprop.0 (net/ipv4/af_inet.c:386)\n   ? __sock_create (include/linux/rcupdate.h:347 (discriminator 1))\n   __sock_create (net/socket.c:1576)\n   __sys_socket (net/socket.c:1671)\n   ? __pfx___sys_socket (net/socket.c:1712)\n   ? do_user_addr_fault (arch/x86/mm/fault.c:1419 (discriminator 1))\n   __x64_sys_socket (net/socket.c:1728)\n   do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1))\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nThat's because when the socket is initialised, rcu_read_lock() is not\nused despite the explicit comment written above the declaration of\nmptcp_sched_find() in sched.c. Adding the missing lock/unlock avoids the\nwarning.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1",
        "1:6.6.31-1+rpt1",
        "1:6.6.47-1+rpt1",
        "1:6.6.51-1+rpt1",
        "1:6.6.51-1+rpt2",
        "1:6.6.51-1+rpt3"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-2712",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.20+rpt-rpi-v8",
            "binary_version": "1:6.6.20-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-2712",
            "binary_version": "1:6.6.28-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.28+rpt-rpi-v8",
            "binary_version": "1:6.6.28-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.31+rpt-rpi-2712",
            "binary_version": "1:6.6.31-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.31+rpt-rpi-v8",
            "binary_version": "1:6.6.31-1+rpt1"
          },
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            "binary_name": "linux-image-6.6.47+rpt-rpi-2712",
            "binary_version": "1:6.6.47-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.6.47+rpt-rpi-v8",
            "binary_version": "1:6.6.47-1+rpt1"
          },
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            "binary_name": "linux-image-6.6.51+rpt-rpi-2712",
            "binary_version": "1:6.6.51-1+rpt1"
          },
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            "binary_version": "1:6.6.51-1+rpt1"
          },
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            "binary_version": "1:6.6.51-1+rpt2"
          },
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            "binary_version": "1:6.6.51-1+rpt2"
          },
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            "binary_version": "1:6.6.51-1+rpt3"
          },
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            "binary_version": "1:6.6.51-1+rpt3"
          }
        ]
      },
      "database_specific": {
        "per_version": {
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            "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668",
            "upstream_version": "6.6.20",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.60"
          },
          "1:6.6.28-1+rpt1": {
            "linux_commit": "0c341f47adc3578cd5f817aa20ee2b7f9ae6b23e",
            "upstream_version": "6.6.28",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.60"
          },
          "1:6.6.31-1+rpt1": {
            "linux_commit": "c1432b4bae5b6582f4d32ba381459f33c34d1424",
            "upstream_version": "6.6.31",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.60"
          },
          "1:6.6.47-1+rpt1": {
            "linux_commit": "cf64a1dfecc2dc418efdd61701c1a4b185ab4761",
            "upstream_version": "6.6.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.60"
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-53047"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cb8b81ad3e893a6d18dcdd3754cc2ea2a42c0136"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/494eb22f9a7bd03783e60595a57611c209175f1a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3deb12c788c385e17142ce6ec50f769852fcec65"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}