CVE-2025-38657

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-38657
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch() The "link_id" value comes from the user via debugfs. If it's larger than BITS_PER_LONG then that would result in shift wrapping and potentially an out of bounds access later. In fact, we can limit it to IEEE80211_MLD_MAX_NUM_LINKS (15). Fortunately, only root can write to debugfs files so the security impact is minimal.

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/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e Patch
https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3 Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:6.16:*:*:*:*:*:*:*
History

26 Nov 2025, 16:32

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e - () https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e - Patch
References () https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3 - () https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
CPE cpe:2.3:o:linux:linux_kernel:6.16:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: rtw89: mcc: impide el ajuste de turnos en rtw89_core_mlsr_switch(). El valor "link_id" proviene del usuario a través de debugfs. Si es mayor que BITS_PER_LONG, esto provocaría un ajuste de turnos y, potencialmente, un acceso fuera de los límites posteriormente. De hecho, podemos limitarlo a IEEE80211_MLD_MAX_NUM_LINKS (15). Afortunadamente, solo el usuario root puede escribir en archivos de debugfs, por lo que el impacto en la seguridad es mínimo.
First Time Linux
Linux linux Kernel
CWE CWE-125

22 Aug 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-08-22 16:15

Updated : 2025-11-26 16:32

NVD link : CVE-2025-38657

Mitre link : CVE-2025-38657

CVE.ORG link : CVE-2025-38657

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read