CVE-2022-49204 (GCVE-0-2022-49204)
Vulnerability from cvelistv5
Published
2025-02-26 01:55
Modified
2025-05-04 08:32
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix more uncharged while msg has more_data In tcp_bpf_send_verdict(), if msg has more data after tcp_bpf_sendmsg_redir(): tcp_bpf_send_verdict() tosend = msg->sg.size //msg->sg.size = 22220 case __SK_REDIRECT: sk_msg_return() //uncharged msg->sg.size(22220) sk->sk_forward_alloc tcp_bpf_sendmsg_redir() //after tcp_bpf_sendmsg_redir, msg->sg.size=11000 goto more_data; tosend = msg->sg.size //msg->sg.size = 11000 case __SK_REDIRECT: sk_msg_return() //uncharged msg->sg.size(11000) to sk->sk_forward_alloc The msg->sg.size(11000) has been uncharged twice, to fix we can charge the remaining msg->sg.size before goto more data. This issue can cause the following info: WARNING: CPU: 0 PID: 9860 at net/core/stream.c:208 sk_stream_kill_queues+0xd4/0x1a0 Call Trace: <TASK> inet_csk_destroy_sock+0x55/0x110 __tcp_close+0x279/0x470 tcp_close+0x1f/0x60 inet_release+0x3f/0x80 __sock_release+0x3d/0xb0 sock_close+0x11/0x20 __fput+0x92/0x250 task_work_run+0x6a/0xa0 do_exit+0x33b/0xb60 do_group_exit+0x2f/0xa0 get_signal+0xb6/0x950 arch_do_signal_or_restart+0xac/0x2a0 ? vfs_write+0x237/0x290 exit_to_user_mode_prepare+0xa9/0x200 syscall_exit_to_user_mode+0x12/0x30 do_syscall_64+0x46/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae </TASK> WARNING: CPU: 0 PID: 2136 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260 Call Trace: <TASK> __sk_destruct+0x24/0x1f0 sk_psock_destroy+0x19b/0x1c0 process_one_work+0x1b3/0x3c0 worker_thread+0x30/0x350 ? process_one_work+0x3c0/0x3c0 kthread+0xe6/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30 </TASK>
References
https://git.kernel.org/stable/c/244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf
https://git.kernel.org/stable/c/7b812a369e6416ab06d83cdd39d8e3f752781dd0
https://git.kernel.org/stable/c/168ff181f5b6e7fce684c98a30d35da1dbf8f82a
https://git.kernel.org/stable/c/87d532d41ef937e16f61b3d2094f3a2ac49be365
https://git.kernel.org/stable/c/abb4caa477a5450817d2aa1198edce66450aecf8
https://git.kernel.org/stable/c/84472b436e760ba439e1969a9e3c5ae7c86de39d
Impacted products
Vendor Product Version
Linux Linux Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
Version: 604326b41a6fb9b4a78b6179335decee0365cd8c
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   Linux Linux Version: 4.20
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/tcp_bpf.c"
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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          ]
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix more uncharged while msg has more_data\n\nIn tcp_bpf_send_verdict(), if msg has more data after\ntcp_bpf_sendmsg_redir():\n\ntcp_bpf_send_verdict()\n tosend = msg-\u003esg.size  //msg-\u003esg.size = 22220\n case __SK_REDIRECT:\n  sk_msg_return()  //uncharged msg-\u003esg.size(22220) sk-\u003esk_forward_alloc\n  tcp_bpf_sendmsg_redir() //after tcp_bpf_sendmsg_redir, msg-\u003esg.size=11000\n goto more_data;\n tosend = msg-\u003esg.size  //msg-\u003esg.size = 11000\n case __SK_REDIRECT:\n  sk_msg_return()  //uncharged msg-\u003esg.size(11000) to sk-\u003esk_forward_alloc\n\nThe msg-\u003esg.size(11000) has been uncharged twice, to fix we can charge the\nremaining msg-\u003esg.size before goto more data.\n\nThis issue can cause the following info:\nWARNING: CPU: 0 PID: 9860 at net/core/stream.c:208 sk_stream_kill_queues+0xd4/0x1a0\nCall Trace:\n \u003cTASK\u003e\n inet_csk_destroy_sock+0x55/0x110\n __tcp_close+0x279/0x470\n tcp_close+0x1f/0x60\n inet_release+0x3f/0x80\n __sock_release+0x3d/0xb0\n sock_close+0x11/0x20\n __fput+0x92/0x250\n task_work_run+0x6a/0xa0\n do_exit+0x33b/0xb60\n do_group_exit+0x2f/0xa0\n get_signal+0xb6/0x950\n arch_do_signal_or_restart+0xac/0x2a0\n ? vfs_write+0x237/0x290\n exit_to_user_mode_prepare+0xa9/0x200\n syscall_exit_to_user_mode+0x12/0x30\n do_syscall_64+0x46/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n \u003c/TASK\u003e\n\nWARNING: CPU: 0 PID: 2136 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260\nCall Trace:\n \u003cTASK\u003e\n __sk_destruct+0x24/0x1f0\n sk_psock_destroy+0x19b/0x1c0\n process_one_work+0x1b3/0x3c0\n worker_thread+0x30/0x350\n ? process_one_work+0x3c0/0x3c0\n kthread+0xe6/0x110\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x22/0x30\n \u003c/TASK\u003e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:32:17.906Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b812a369e6416ab06d83cdd39d8e3f752781dd0"
        },
        {
          "url": "https://git.kernel.org/stable/c/168ff181f5b6e7fce684c98a30d35da1dbf8f82a"
        },
        {
          "url": "https://git.kernel.org/stable/c/87d532d41ef937e16f61b3d2094f3a2ac49be365"
        },
        {
          "url": "https://git.kernel.org/stable/c/abb4caa477a5450817d2aa1198edce66450aecf8"
        },
        {
          "url": "https://git.kernel.org/stable/c/84472b436e760ba439e1969a9e3c5ae7c86de39d"
        }
      ],
      "title": "bpf, sockmap: Fix more uncharged while msg has more_data",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49204",
    "datePublished": "2025-02-26T01:55:44.678Z",
    "dateReserved": "2025-02-26T01:49:39.291Z",
    "dateUpdated": "2025-05-04T08:32:17.906Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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