CVE-2023-53709 (GCVE-0-2023-53709)

Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2026-05-11 19:50
VLAI
Title
ring-buffer: Handle race between rb_move_tail and rb_check_pages
Summary
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Handle race between rb_move_tail and rb_check_pages It seems a data race between ring_buffer writing and integrity check. That is, RB_FLAG of head_page is been updating, while at same time RB_FLAG was cleared when doing integrity check rb_check_pages(): rb_check_pages() rb_handle_head_page(): -------- -------- rb_head_page_deactivate() rb_head_page_set_normal() rb_head_page_activate() We do intergrity test of the list to check if the list is corrupted and it is still worth doing it. So, let's refactor rb_check_pages() such that we no longer clear and set flag during the list sanity checking. [1] and [2] are the test to reproduce and the crash report respectively. 1: ``` read_trace.sh while true; do # the "trace" file is closed after read head -1 /sys/kernel/tracing/trace > /dev/null done ``` ``` repro.sh sysctl -w kernel.panic_on_warn=1 # function tracer will writing enough data into ring_buffer echo function > /sys/kernel/tracing/current_tracer ./read_trace.sh & ./read_trace.sh & ./read_trace.sh & ./read_trace.sh & ./read_trace.sh & ./read_trace.sh & ./read_trace.sh & ./read_trace.sh & ``` 2: ------------[ cut here ]------------ WARNING: CPU: 9 PID: 62 at kernel/trace/ring_buffer.c:2653 rb_move_tail+0x450/0x470 Modules linked in: CPU: 9 PID: 62 Comm: ksoftirqd/9 Tainted: G W 6.2.0-rc6+ Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 RIP: 0010:rb_move_tail+0x450/0x470 Code: ff ff 4c 89 c8 f0 4d 0f b1 02 48 89 c2 48 83 e2 fc 49 39 d0 75 24 83 e0 03 83 f8 02 0f 84 e1 fb ff ff 48 8b 57 10 f0 ff 42 08 <0f> 0b 83 f8 02 0f 84 ce fb ff ff e9 db RSP: 0018:ffffb5564089bd00 EFLAGS: 00000203 RAX: 0000000000000000 RBX: ffff9db385a2bf81 RCX: ffffb5564089bd18 RDX: ffff9db281110100 RSI: 0000000000000fe4 RDI: ffff9db380145400 RBP: ffff9db385a2bf80 R08: ffff9db385a2bfc0 R09: ffff9db385a2bfc2 R10: ffff9db385a6c000 R11: ffff9db385a2bf80 R12: 0000000000000000 R13: 00000000000003e8 R14: ffff9db281110100 R15: ffffffffbb006108 FS: 0000000000000000(0000) GS:ffff9db3bdcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005602323024c8 CR3: 0000000022e0c000 CR4: 00000000000006e0 Call Trace: <TASK> ring_buffer_lock_reserve+0x136/0x360 ? __do_softirq+0x287/0x2df ? __pfx_rcu_softirq_qs+0x10/0x10 trace_function+0x21/0x110 ? __pfx_rcu_softirq_qs+0x10/0x10 ? __do_softirq+0x287/0x2df function_trace_call+0xf6/0x120 0xffffffffc038f097 ? rcu_softirq_qs+0x5/0x140 rcu_softirq_qs+0x5/0x140 __do_softirq+0x287/0x2df run_ksoftirqd+0x2a/0x30 smpboot_thread_fn+0x188/0x220 ? __pfx_smpboot_thread_fn+0x10/0x10 kthread+0xe7/0x110 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 </TASK> ---[ end trace 0000000000000000 ]--- [ crash report and test reproducer credit goes to Zheng Yejian]
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1039221cc2787dee51a7ffbf9b0e79d192dadf76 , < 6e02a43acd0691791df79ce538f2dd497a6c9b76 (git)
Affected: 1039221cc2787dee51a7ffbf9b0e79d192dadf76 , < d41db100bc386b9433a3fc87026f5e8b453653e3 (git)
Affected: 1039221cc2787dee51a7ffbf9b0e79d192dadf76 , < 9674390ac540ed06768e3fbc2dba553929fbd736 (git)
Affected: 1039221cc2787dee51a7ffbf9b0e79d192dadf76 , < 09b1bf25f7f7a8f2bf8cd4278bba9c3172db8013 (git)
Affected: 1039221cc2787dee51a7ffbf9b0e79d192dadf76 , < 8843e06f67b14f71c044bf6267b2387784c7e198 (git)
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Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.99 , ≤ 5.15.* (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
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      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Handle race between rb_move_tail and rb_check_pages\n\nIt seems a data race between ring_buffer writing and integrity check.\nThat is, RB_FLAG of head_page is been updating, while at same time\nRB_FLAG was cleared when doing integrity check rb_check_pages():\n\n  rb_check_pages()            rb_handle_head_page():\n  --------                    --------\n  rb_head_page_deactivate()\n                              rb_head_page_set_normal()\n  rb_head_page_activate()\n\nWe do intergrity test of the list to check if the list is corrupted and\nit is still worth doing it. So, let\u0027s refactor rb_check_pages() such that\nwe no longer clear and set flag during the list sanity checking.\n\n[1] and [2] are the test to reproduce and the crash report respectively.\n\n1:\n``` read_trace.sh\n  while true;\n  do\n    # the \"trace\" file is closed after read\n    head -1 /sys/kernel/tracing/trace \u003e /dev/null\n  done\n```\n``` repro.sh\n  sysctl -w kernel.panic_on_warn=1\n  # function tracer will writing enough data into ring_buffer\n  echo function \u003e /sys/kernel/tracing/current_tracer\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n```\n\n2:\n------------[ cut here ]------------\nWARNING: CPU: 9 PID: 62 at kernel/trace/ring_buffer.c:2653\nrb_move_tail+0x450/0x470\nModules linked in:\nCPU: 9 PID: 62 Comm: ksoftirqd/9 Tainted: G        W          6.2.0-rc6+\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nRIP: 0010:rb_move_tail+0x450/0x470\nCode: ff ff 4c 89 c8 f0 4d 0f b1 02 48 89 c2 48 83 e2 fc 49 39 d0 75 24\n83 e0 03 83 f8 02 0f 84 e1 fb ff ff 48 8b 57 10 f0 ff 42 08 \u003c0f\u003e 0b 83\nf8 02 0f 84 ce fb ff ff e9 db\nRSP: 0018:ffffb5564089bd00 EFLAGS: 00000203\nRAX: 0000000000000000 RBX: ffff9db385a2bf81 RCX: ffffb5564089bd18\nRDX: ffff9db281110100 RSI: 0000000000000fe4 RDI: ffff9db380145400\nRBP: ffff9db385a2bf80 R08: ffff9db385a2bfc0 R09: ffff9db385a2bfc2\nR10: ffff9db385a6c000 R11: ffff9db385a2bf80 R12: 0000000000000000\nR13: 00000000000003e8 R14: ffff9db281110100 R15: ffffffffbb006108\nFS:  0000000000000000(0000) GS:ffff9db3bdcc0000(0000)\nknlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005602323024c8 CR3: 0000000022e0c000 CR4: 00000000000006e0\nCall Trace:\n \u003cTASK\u003e\n ring_buffer_lock_reserve+0x136/0x360\n ? __do_softirq+0x287/0x2df\n ? __pfx_rcu_softirq_qs+0x10/0x10\n trace_function+0x21/0x110\n ? __pfx_rcu_softirq_qs+0x10/0x10\n ? __do_softirq+0x287/0x2df\n function_trace_call+0xf6/0x120\n 0xffffffffc038f097\n ? rcu_softirq_qs+0x5/0x140\n rcu_softirq_qs+0x5/0x140\n __do_softirq+0x287/0x2df\n run_ksoftirqd+0x2a/0x30\n smpboot_thread_fn+0x188/0x220\n ? __pfx_smpboot_thread_fn+0x10/0x10\n kthread+0xe7/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n \u003c/TASK\u003e\n---[ end trace 0000000000000000 ]---\n\n[ crash report and test reproducer credit goes to Zheng Yejian]"
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        "dateUpdated": "2026-05-11T19:50:20.480Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/6e02a43acd0691791df79ce538f2dd497a6c9b76"
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        },
        {
          "url": "https://git.kernel.org/stable/c/8843e06f67b14f71c044bf6267b2387784c7e198"
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      ],
      "title": "ring-buffer: Handle race between rb_move_tail and rb_check_pages",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53709",
    "datePublished": "2025-10-22T13:23:45.155Z",
    "dateReserved": "2025-10-22T13:21:37.346Z",
    "dateUpdated": "2026-05-11T19:50:20.480Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Handle race between rb_move_tail and rb_check_pages\n\nIt seems a data race between ring_buffer writing and integrity check.\nThat is, RB_FLAG of head_page is been updating, while at same time\nRB_FLAG was cleared when doing integrity check rb_check_pages():\n\n  rb_check_pages()            rb_handle_head_page():\n  --------                    --------\n  rb_head_page_deactivate()\n                              rb_head_page_set_normal()\n  rb_head_page_activate()\n\nWe do intergrity test of the list to check if the list is corrupted and\nit is still worth doing it. So, let\u0027s refactor rb_check_pages() such that\nwe no longer clear and set flag during the list sanity checking.\n\n[1] and [2] are the test to reproduce and the crash report respectively.\n\n1:\n``` read_trace.sh\n  while true;\n  do\n    # the \"trace\" file is closed after read\n    head -1 /sys/kernel/tracing/trace \u003e /dev/null\n  done\n```\n``` repro.sh\n  sysctl -w kernel.panic_on_warn=1\n  # function tracer will writing enough data into ring_buffer\n  echo function \u003e /sys/kernel/tracing/current_tracer\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n```\n\n2:\n------------[ cut here ]------------\nWARNING: CPU: 9 PID: 62 at kernel/trace/ring_buffer.c:2653\nrb_move_tail+0x450/0x470\nModules linked in:\nCPU: 9 PID: 62 Comm: ksoftirqd/9 Tainted: G        W          6.2.0-rc6+\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nRIP: 0010:rb_move_tail+0x450/0x470\nCode: ff ff 4c 89 c8 f0 4d 0f b1 02 48 89 c2 48 83 e2 fc 49 39 d0 75 24\n83 e0 03 83 f8 02 0f 84 e1 fb ff ff 48 8b 57 10 f0 ff 42 08 \u003c0f\u003e 0b 83\nf8 02 0f 84 ce fb ff ff e9 db\nRSP: 0018:ffffb5564089bd00 EFLAGS: 00000203\nRAX: 0000000000000000 RBX: ffff9db385a2bf81 RCX: ffffb5564089bd18\nRDX: ffff9db281110100 RSI: 0000000000000fe4 RDI: ffff9db380145400\nRBP: ffff9db385a2bf80 R08: ffff9db385a2bfc0 R09: ffff9db385a2bfc2\nR10: ffff9db385a6c000 R11: ffff9db385a2bf80 R12: 0000000000000000\nR13: 00000000000003e8 R14: ffff9db281110100 R15: ffffffffbb006108\nFS:  0000000000000000(0000) GS:ffff9db3bdcc0000(0000)\nknlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005602323024c8 CR3: 0000000022e0c000 CR4: 00000000000006e0\nCall Trace:\n \u003cTASK\u003e\n ring_buffer_lock_reserve+0x136/0x360\n ? __do_softirq+0x287/0x2df\n ? __pfx_rcu_softirq_qs+0x10/0x10\n trace_function+0x21/0x110\n ? __pfx_rcu_softirq_qs+0x10/0x10\n ? __do_softirq+0x287/0x2df\n function_trace_call+0xf6/0x120\n 0xffffffffc038f097\n ? rcu_softirq_qs+0x5/0x140\n rcu_softirq_qs+0x5/0x140\n __do_softirq+0x287/0x2df\n run_ksoftirqd+0x2a/0x30\n smpboot_thread_fn+0x188/0x220\n ? __pfx_smpboot_thread_fn+0x10/0x10\n kthread+0xe7/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n \u003c/TASK\u003e\n---[ end trace 0000000000000000 ]---\n\n[ crash report and test reproducer credit goes to Zheng Yejian]"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nring-buffer: Manejar la condici\u00f3n de carrera entre rb_move_tail y rb_check_pages\n\nParece una condici\u00f3n de carrera de datos entre la escritura del ring_buffer y la comprobaci\u00f3n de integridad.\nEs decir, el RB_FLAG de head_page se est\u00e1 actualizando, mientras que al mismo tiempo\nel RB_FLAG fue borrado al realizar la comprobaci\u00f3n de integridad rb_check_pages():\n\n  rb_check_pages()            rb_handle_head_page():\n  --------                    --------\n  rb_head_page_deactivate()\n                              rb_head_page_set_normal()\n  rb_head_page_activate()\n\nRealizamos una prueba de integridad de la lista para comprobar si la lista est\u00e1 corrupta y\nsi todav\u00eda vale la pena hacerlo. As\u00ed que, refactoricemos rb_check_pages() de tal manera que\nya no borremos y establezcamos la bandera durante la comprobaci\u00f3n de coherencia de la lista.\n\n[1] y [2] son la prueba para reproducir y el informe de fallo respectivamente.\n\n1:\n\u201d\u201d\u201c read_trace.sh\n  while true;\n  do\n    # the \u201ctrace\u201d file is closed after read\n    head -1 /sys/kernel/tracing/trace \u003e [SystemPath]\n  done\n\u201d\u201d\u201c\n\u201d\u201d\u201c repro.sh\n  sysctl -w kernel.panic_on_warn=1\n  # function tracer will writing enough data into ring_buffer\n  echo function \u003e /sys/kernel/tracing/current_tracer\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n  ./read_trace.sh \u0026\n\u201d\u201d\u201d\n\n2:\n------------[ cut here ]------------\nWARNING: CPU: 9 PID: 62 at kernel/trace/ring_buffer.c:2653\nrb_move_tail+0x450/0x470\nModules linked in:\nCPU: 9 PID: 62 Comm: ksoftirqd/9 Tainted: G        W          6.2.0-rc6+\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nRIP: 0010:rb_move_tail+0x450/0x470\nCode: ff ff 4c 89 c8 f0 4d 0f b1 02 48 89 c2 48 83 e2 fc 49 39 d0 75 24\n83 e0 03 83 f8 02 0f 84 e1 fb ff ff 48 8b 57 10 f0 ff 42 08 [0f] 0b 83\nf8 02 0f 84 ce fb ff ff e9 db\nRSP: 0018:ffffb5564089bd00 EFLAGS: 00000203\nRAX: 0000000000000000 RBX: ffff9db385a2bf81 RCX: ffffb5564089bd18\nRDX: ffff9db281110100 RSI: 0000000000000fe4 RDI: ffff9db380145400\nRBP: ffff9db385a2bf80 R08: ffff9db385a2bfc0 R09: ffff9db385a2bfc2\nR10: ffff9db385a6c000 R11: ffff9db385a2bf80 R12: 0000000000000000\nR13: 00000000000003e8 R14: ffff9db281110100 R15: ffffffffbb006108\nFS:  0000000000000000(0000) GS:ffff9db3bdcc0000(0000)\nknlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005602323024c8 CR3: 0000000022e0c000 CR4: 00000000000006e0\nCall Trace:\n [TASK]\n ring_buffer_lock_reserve+0x136/0x360\n ? __do_softirq+0x287/0x2df\n ? __pfx_rcu_softirq_qs+0x10/0x10\n trace_function+0x21/0x110\n ? __pfx_rcu_softirq_qs+0x10/0x10\n ? __do_softirq+0x287/0x2df\n function_trace_call+0xf6/0x120\n 0xffffffffc038f097\n ? rcu_softirq_qs+0x5/0x140\n rcu_softirq_qs+0x5/0x140\n __do_softirq+0x287/0x2df\n run_ksoftirqd+0x2a/0x30\n smpboot_thread_fn+0x188/0x220\n ? __pfx_smpboot_thread_fn+0x10/0x10\n kthread+0xe7/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n [/TASK]\n---[ end trace 0000000000000000 ]---\n\n[el cr\u00e9dito del informe de fallo y del reproductor de prueba es para Zheng Yejian]"
          }
        ],
        "id": "CVE-2023-53709",
        "lastModified": "2026-10-28T19:10:00.193",
        "metrics": {},
        "published": "2025-10-22T14:15:45.510",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/09b1bf25f7f7a8f2bf8cd4278bba9c3172db8013"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6e02a43acd0691791df79ce538f2dd497a6c9b76"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8843e06f67b14f71c044bf6267b2387784c7e198"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9674390ac540ed06768e3fbc2dba553929fbd736"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d41db100bc386b9433a3fc87026f5e8b453653e3"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:17:19+00:00",
      "cve": "CVE-2023-53709",
      "id": "CVE-2023-53709",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "279",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ring-buffer: Handle race between rb_move_tail and rb_check_pages",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53709.json",
      "version": "3"
    }
  }
}



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