FKIE_CVE-2023-53167

Vulnerability from fkie_nvd - Published: 2025-09-15 14:15 - Updated: 2025-11-24 21:02
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix null pointer dereference in tracing_err_log_open() Fix an issue in function 'tracing_err_log_open'. The function doesn't call 'seq_open' if the file is opened only with write permissions, which results in 'file->private_data' being left as null. If we then use 'lseek' on that opened file, 'seq_lseek' dereferences 'file->private_data' in 'mutex_lock(&m->lock)', resulting in a kernel panic. Writing to this node requires root privileges, therefore this bug has very little security impact. Tracefs node: /sys/kernel/tracing/error_log Example Kernel panic: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000038 Call trace: mutex_lock+0x30/0x110 seq_lseek+0x34/0xb8 __arm64_sys_lseek+0x6c/0xb8 invoke_syscall+0x58/0x13c el0_svc_common+0xc4/0x10c do_el0_svc+0x24/0x98 el0_svc+0x24/0x88 el0t_64_sync_handler+0x84/0xe4 el0t_64_sync+0x1b4/0x1b8 Code: d503201f aa0803e0 aa1f03e1 aa0103e9 (c8e97d02) ---[ end trace 561d1b49c12cf8a5 ]--- Kernel panic - not syncing: Oops: Fatal exception
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02b0095e2fbbc060560c1065f86a211d91e27b26Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1e1c9aa9288a46c342f0f2c5c0b1c0876b9b0276Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b5d9b7b875968a8a8c99dac45cb85b705c44802Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7060e5aac6dc195124c106f49106d653a416323aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/93114cbc7cb169f6f26eeaed5286b91bb86b463bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/938d5b7a75e18264887387ddf9169db6d8aeef98Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix null pointer dereference in tracing_err_log_open()\n\nFix an issue in function \u0027tracing_err_log_open\u0027.\nThe function doesn\u0027t call \u0027seq_open\u0027 if the file is opened only with\nwrite permissions, which results in \u0027file-\u003eprivate_data\u0027 being left as null.\nIf we then use \u0027lseek\u0027 on that opened file, \u0027seq_lseek\u0027 dereferences\n\u0027file-\u003eprivate_data\u0027 in \u0027mutex_lock(\u0026m-\u003elock)\u0027, resulting in a kernel panic.\nWriting to this node requires root privileges, therefore this bug\nhas very little security impact.\n\nTracefs node: /sys/kernel/tracing/error_log\n\nExample Kernel panic:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000038\nCall trace:\n mutex_lock+0x30/0x110\n seq_lseek+0x34/0xb8\n __arm64_sys_lseek+0x6c/0xb8\n invoke_syscall+0x58/0x13c\n el0_svc_common+0xc4/0x10c\n do_el0_svc+0x24/0x98\n el0_svc+0x24/0x88\n el0t_64_sync_handler+0x84/0xe4\n el0t_64_sync+0x1b4/0x1b8\nCode: d503201f aa0803e0 aa1f03e1 aa0103e9 (c8e97d02)\n---[ end trace 561d1b49c12cf8a5 ]---\nKernel panic - not syncing: Oops: Fatal exception"
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  "id": "CVE-2023-53167",
  "lastModified": "2025-11-24T21:02:37.190",
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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