fkie_cve-2023-53167
Vulnerability from fkie_nvd
Published
2025-09-15 14:15
Modified
2025-09-15 15:22
Severity ?
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
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"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"
}
],
"id": "CVE-2023-53167",
"lastModified": "2025-09-15T15:22:27.090",
"metrics": {},
"published": "2025-09-15T14:15:38.457",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/02b0095e2fbbc060560c1065f86a211d91e27b26"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/1e1c9aa9288a46c342f0f2c5c0b1c0876b9b0276"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3b5d9b7b875968a8a8c99dac45cb85b705c44802"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7060e5aac6dc195124c106f49106d653a416323a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/93114cbc7cb169f6f26eeaed5286b91bb86b463b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/938d5b7a75e18264887387ddf9169db6d8aeef98"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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