CVE-2023-53709
Full vulnerability record from the local CVENow database.
Description
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]
View original CVE JSON
{
"id": "CVE-2023-53709",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-10-22T14:15:45.510",
"lastModified": "2026-10-28T19:10:00.193",
"vulnStatus": "Deferred",
"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's 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 > /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 > /sys/kernel/tracing/current_tracer\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\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 <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[ 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 condición de carrera entre rb_move_tail y rb_check_pages\n\nParece una condición de carrera de datos entre la escritura del ring_buffer y la comprobación de integridad.\nEs decir, el RB_FLAG de head_page se está actualizando, mientras que al mismo tiempo\nel RB_FLAG fue borrado al realizar la comprobación 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 está corrupta y\nsi todavía vale la pena hacerlo. Así que, refactoricemos rb_check_pages() de tal manera que\nya no borremos y establezcamos la bandera durante la comprobación de coherencia de la lista.\n\n[1] y [2] son la prueba para reproducir y el informe de fallo respectivamente.\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 > [SystemPath]\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 > /sys/kernel/tracing/current_tracer\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\n ./read_trace.sh &\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 [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 crédito del informe de fallo y del reproductor de prueba es para Zheng Yejian]"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"kernel/trace/ring_buffer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "1039221cc2787dee51a7ffbf9b0e79d192dadf76",
"lessThan": "6e02a43acd0691791df79ce538f2dd497a6c9b76",
"versionType": "git",
"status": "affected"
},
{
"version": "1039221cc2787dee51a7ffbf9b0e79d192dadf76",
"lessThan": "d41db100bc386b9433a3fc87026f5e8b453653e3",
"versionType": "git",
"status": "affected"
},
{
"version": "1039221cc2787dee51a7ffbf9b0e79d192dadf76",
"lessThan": "9674390ac540ed06768e3fbc2dba553929fbd736",
"versionType": "git",
"status": "affected"
},
{
"version": "1039221cc2787dee51a7ffbf9b0e79d192dadf76",
"lessThan": "09b1bf25f7f7a8f2bf8cd4278bba9c3172db8013",
"versionType": "git",
"status": "affected"
},
{
"version": "1039221cc2787dee51a7ffbf9b0e79d192dadf76",
"lessThan": "8843e06f67b14f71c044bf6267b2387784c7e198",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"kernel/trace/ring_buffer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.7",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.7",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.173",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.99",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.16",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.2.3",
"lessThanOrEqual": "6.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"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",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}