{"schema_version":"1.9.0","id":"CVE-2023-53709","published":"2025-10-22T13:23:45.155Z","modified":"2026-08-12T03:51:24.208138015Z","related":["SUSE-SU-2025:4111-1","SUSE-SU-2025:4139-1","SUSE-SU-2025:4149-1","SUSE-SU-2025:4320-1"],"summary":"ring-buffer: Handle race between rb_move_tail and rb_check_pages","details":"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]","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1039221cc2787dee51a7ffbf9b0e79d192dadf76"},{"fixed":"6e02a43acd0691791df79ce538f2dd497a6c9b76"},{"fixed":"d41db100bc386b9433a3fc87026f5e8b453653e3"},{"fixed":"9674390ac540ed06768e3fbc2dba553929fbd736"},{"fixed":"09b1bf25f7f7a8f2bf8cd4278bba9c3172db8013"},{"fixed":"8843e06f67b14f71c044bf6267b2387784c7e198"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53709.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.7.0"},{"fixed":"5.10.173"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.99"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53709.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/09b1bf25f7f7a8f2bf8cd4278bba9c3172db8013"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e02a43acd0691791df79ce538f2dd497a6c9b76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8843e06f67b14f71c044bf6267b2387784c7e198"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9674390ac540ed06768e3fbc2dba553929fbd736"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d41db100bc386b9433a3fc87026f5e8b453653e3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53709.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53709"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53709.json"}}