CVE-2025-38636

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-38636
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.

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0ebc70d973ce7a81826b5c4f55f743e07f5864d9 Patch
https://git.kernel.org/stable/c/7f904ff6e58d398c4336f3c19c42b338324451f7 Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

26 Nov 2025, 17:12

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-125
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/0ebc70d973ce7a81826b5c4f55f743e07f5864d9 - () https://git.kernel.org/stable/c/0ebc70d973ce7a81826b5c4f55f743e07f5864d9 - Patch
References () https://git.kernel.org/stable/c/7f904ff6e58d398c4336f3c19c42b338324451f7 - () https://git.kernel.org/stable/c/7f904ff6e58d398c4336f3c19c42b338324451f7 - Patch
Summary
  • (es) 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 límites en do_trace_event_raw_event_event_da_monitor+0xd6/0x1a0 Lectura de tamaño 32 en la dirección 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 dirección 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 definición del autómata. Dichas cadenas son literales y la lectura de 32 bytes termina en accesos fuera de memoria límite (por ejemplo, los datos del siguiente autómata en este caso). El error es inofensivo ya que, al imprimir la cadena, nos detenemos en el terminador nulo, pero aún así debería corregirse. Use las facilidades __string al definir los puntos de seguimiento para evitar la lectura fuera de memoria límite.

22 Aug 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-08-22 16:15

Updated : 2025-11-26 17:12

NVD link : CVE-2025-38636

Mitre link : CVE-2025-38636

CVE.ORG link : CVE-2025-38636

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read