fkie_cve-2025-38636
Vulnerability from fkie_nvd
Published
2025-08-22 16:15
Modified
2025-08-22 18:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
rv: Use strings in da monitors tracepoints
Using DA monitors tracepoints with KASAN enabled triggers the following
warning:
BUG: KASAN: global-out-of-bounds in do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0
Read of size 32 at addr ffffffffaada8980 by task ...
Call Trace:
<TASK>
[...]
do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0
? __pfx_do_trace_event_raw_event_event_da_monitor+0x10/0x10
? trace_event_sncid+0x83/0x200
trace_event_sncid+0x163/0x200
[...]
The buggy address belongs to the variable:
automaton_snep+0x4e0/0x5e0
This is caused by the tracepoints reading 32 bytes __array instead of
__string from the automata definition. Such strings are literals and
reading 32 bytes ends up in out of bound memory accesses (e.g. the next
automaton's data in this case).
The error is harmless as, while printing the string, we stop at the null
terminator, but it should still be fixed.
Use the __string facilities while defining the tracepoints to avoid
reading out of bound memory.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrv: Use strings in da monitors tracepoints\n\nUsing DA monitors tracepoints with KASAN enabled triggers the following\nwarning:\n\n BUG: KASAN: global-out-of-bounds in do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0\n Read of size 32 at addr ffffffffaada8980 by task ...\n Call Trace:\n \u003cTASK\u003e\n [...]\n do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0\n ? __pfx_do_trace_event_raw_event_event_da_monitor+0x10/0x10\n ? trace_event_sncid+0x83/0x200\n trace_event_sncid+0x163/0x200\n [...]\n The buggy address belongs to the variable:\n automaton_snep+0x4e0/0x5e0\n\nThis is caused by the tracepoints reading 32 bytes __array instead of\n__string from the automata definition. Such strings are literals and\nreading 32 bytes ends up in out of bound memory accesses (e.g. the next\nautomaton\u0027s data in this case).\nThe error is harmless as, while printing the string, we stop at the null\nterminator, but it should still be fixed.\n\nUse the __string facilities while defining the tracepoints to avoid\nreading out of bound memory."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rv: Uso de cadenas en los puntos de seguimiento de los monitores DA El uso de puntos de seguimiento de los monitores DA con KASAN habilitado activa la siguiente advertencia: ERROR: KASAN: global fuera de los l\u00edmites en do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0 Lectura de tama\u00f1o 32 en la direcci\u00f3n ffffffffaada8980 por la tarea ... Seguimiento de llamada: [...] do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0 ? __pfx_do_trace_event_raw_event_event_da_monitor+0x10/0x10 ? trace_event_sncid+0x83/0x200 trace_event_sncid+0x163/0x200 [...] La direcci\u00f3n con errores pertenece a la variable: automaton_snep+0x4e0/0x5e0 Esto se debe a que los puntos de seguimiento leen 32 bytes __array en lugar de __string de la definici\u00f3n del aut\u00f3mata. Dichas cadenas son literales y la lectura de 32 bytes termina en accesos fuera de memoria l\u00edmite (por ejemplo, los datos del siguiente aut\u00f3mata en este caso). El error es inofensivo ya que, al imprimir la cadena, nos detenemos en el terminador nulo, pero a\u00fan as\u00ed deber\u00eda corregirse. Use las facilidades __string al definir los puntos de seguimiento para evitar la lectura fuera de memoria l\u00edmite."
}
],
"id": "CVE-2025-38636",
"lastModified": "2025-08-22T18:08:51.663",
"metrics": {},
"published": "2025-08-22T16:15:37.587",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0ebc70d973ce7a81826b5c4f55f743e07f5864d9"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7f904ff6e58d398c4336f3c19c42b338324451f7"
}
],
"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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