{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-50083",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-50083"
  ],
  "published": "2024-10-29T00:50:48Z",
  "summary": "tcp: fix mptcp DSS corruption due to large pmtu xmit",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: fix mptcp DSS corruption due to large pmtu xmit\n\nSyzkaller was able to trigger a DSS corruption:\n\n  TCP: request_sock_subflow_v4: Possible SYN flooding on port [::]:20002. Sending cookies.\n  ------------[ cut here ]------------\n  WARNING: CPU: 0 PID: 5227 at net/mptcp/protocol.c:695 __mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695\n  Modules linked in:\n  CPU: 0 UID: 0 PID: 5227 Comm: syz-executor350 Not tainted 6.11.0-syzkaller-08829-gaf9c191ac2a0 #0\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\n  RIP: 0010:__mptcp_move_skbs_from_subflow+0x20a9/0x21f0 net/mptcp/protocol.c:695\n  Code: 0f b6 dc 31 ff 89 de e8 b5 dd ea f5 89 d8 48 81 c4 50 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 98 da ea f5 90 <0f> 0b 90 e9 47 ff ff ff e8 8a da ea f5 90 0f 0b 90 e9 99 e0 ff ff\n  RSP: 0018:ffffc90000006db8 EFLAGS: 00010246\n  RAX: ffffffff8ba9df18 RBX: 00000000000055f0 RCX: ffff888030023c00\n  RDX: 0000000000000100 RSI: 00000000000081e5 RDI: 00000000000055f0\n  RBP: 1ffff110062bf1ae R08: ffffffff8ba9cf12 R09: 1ffff110062bf1b8\n  R10: dffffc0000000000 R11: ffffed10062bf1b9 R12: 0000000000000000\n  R13: dffffc0000000000 R14: 00000000700cec61 R15: 00000000000081e5\n  FS:  000055556679c380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000020287000 CR3: 0000000077892000 CR4: 00000000003506f0\n  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  Call Trace:\n   <IRQ>\n   move_skbs_to_msk net/mptcp/protocol.c:811 [inline]\n   mptcp_data_ready+0x29c/0xa90 net/mptcp/protocol.c:854\n   subflow_data_ready+0x34a/0x920 net/mptcp/subflow.c:1490\n   tcp_data_queue+0x20fd/0x76c0 net/ipv4/tcp_input.c:5283\n   tcp_rcv_established+0xfba/0x2020 net/ipv4/tcp_input.c:6237\n   tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1915\n   tcp_v4_rcv+0x2dc0/0x37f0 net/ipv4/tcp_ipv4.c:2350\n   ip_protocol_deliver_rcu+0x22e/0x440 net/ipv4/ip_input.c:205\n   ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233\n   NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314\n   NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314\n   __netif_receive_skb_one_core net/core/dev.c:5662 [inline]\n   __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775\n   process_backlog+0x662/0x15b0 net/core/dev.c:6107\n   __napi_poll+0xcb/0x490 net/core/dev.c:6771\n   napi_poll net/core/dev.c:6840 [inline]\n   net_rx_action+0x89b/0x1240 net/core/dev.c:6962\n   handle_softirqs+0x2c5/0x980 kernel/softirq.c:554\n   do_softirq+0x11b/0x1e0 kernel/softirq.c:455\n   </IRQ>\n   <TASK>\n   __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382\n   local_bh_enable include/linux/bottom_half.h:33 [inline]\n   rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]\n   __dev_queue_xmit+0x1764/0x3e80 net/core/dev.c:4451\n   dev_queue_xmit include/linux/netdevice.h:3094 [inline]\n   neigh_hh_output include/net/neighbour.h:526 [inline]\n   neigh_output include/net/neighbour.h:540 [inline]\n   ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236\n   ip_local_out net/ipv4/ip_output.c:130 [inline]\n   __ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:536\n   __tcp_transmit_skb+0x2544/0x3b30 net/ipv4/tcp_output.c:1466\n   tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]\n   tcp_mtu_probe net/ipv4/tcp_output.c:2547 [inline]\n   tcp_write_xmit+0x641d/0x6bf0 net/ipv4/tcp_output.c:2752\n   __tcp_push_pending_frames+0x9b/0x360 net/ipv4/tcp_output.c:3015\n   tcp_push_pending_frames include/net/tcp.h:2107 [inline]\n   tcp_data_snd_check net/ipv4/tcp_input.c:5714 [inline]\n   tcp_rcv_established+0x1026/0x2020 net/ipv4/tcp_input.c:6239\n   tcp_v4_do_rcv+0x96d/0xc70 net/ipv4/tcp_ipv4.c:1915\n   sk_backlog_rcv include/net/sock.h:1113 [inline]\n   __release_sock+0x214/0x350 net/core/sock.c:3072\n   release_sock+0x61/0x1f0 net/core/sock.c:3626\n   mptcp_push_\n---truncated---",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
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        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4",
        "1:6.1.54-1+rpt2",
        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "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": {
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            "binary_version": "1:6.6.51-1+rpt3"
          },
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        ]
      },
      "database_specific": {
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            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.114"
          },
          "1:6.1.47-1+rpt2": {
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            "compiled_filter": false
          },
          "1:6.1.54-1+rpt2": {
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          },
          "1:6.1.63-1+rpt1": {
            "linux_commit": null,
            "upstream_version": "6.1.63",
            "assessment": "upstream version (no usable Linux commit)",
            "upstream_fixed": "6.1.114"
          },
          "1:6.1.73-1+rpt1": {
            "linux_commit": null,
            "upstream_version": "6.1.73",
            "assessment": "upstream version (no usable Linux commit)",
            "upstream_fixed": "6.1.114"
          },
          "1:6.6.20-1+rpt1": {
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            "upstream_version": "6.6.20",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.58"
          },
          "1:6.6.28-1+rpt1": {
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            "upstream_version": "6.6.28",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.58"
          },
          "1:6.6.31-1+rpt1": {
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            "assessment": "commit ancestry (strak rule)",
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          },
          "1:6.6.47-1+rpt1": {
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            "upstream_version": "6.6.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.58"
          },
          "1:6.6.51-1+rpt1": {
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            "upstream_version": "6.6.51",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.58"
          },
          "1:6.6.51-1+rpt2": {
            "linux_commit": "82a50e430ef1d6eb37d78e25aa572c1f6ea56160",
            "upstream_version": "6.6.51",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.58"
          },
          "1:6.6.51-1+rpt3": {
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            "upstream_version": "6.6.51",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.6.58"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-50083"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c38add9ac0e4d4f418e6443a688491499021add9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9729010a0ac5945c1bf6847dd0778d8a1a4b72ac"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ba8e65814e519eeb17d086952bce7de93f7a40da"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/229dfdc36f31a8d47433438bc0e6e1662c4ab404"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/db04d1848777ae52a7ab93c4591e7c0bf8f55fb4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4dabcdf581217e60690467a37c956a5b8dbc6bd9"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}