CVE-2025-37952

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  3. CVE-2025-37952

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix UAF in __close_file_table_ids A use-after-free is possible if one thread destroys the file via __ksmbd_close_fd while another thread holds a reference to it. The existing checks on fp->refcount are not sufficient to prevent this. The fix takes ft->lock around the section which removes the file from the file table. This prevents two threads acquiring the same file pointer via __close_file_table_ids, as well as the other functions which retrieve a file from the IDR and which already use this same lock.

References
Link Resource
https://git.kernel.org/stable/c/16727e442568a46d9cca69fe2595896de86e120d Patch
https://git.kernel.org/stable/c/36991c1ccde2d5a521577c448ffe07fcccfe104d Patch
https://git.kernel.org/stable/c/9e9841e232b51171ddf3bc4ee517d5d28dc8cad6 Patch
https://git.kernel.org/stable/c/fec1f9e9a650e8e7011330a085c77e7bf2a08ea9 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
History

17 Nov 2025, 12:57

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
References () https://git.kernel.org/stable/c/16727e442568a46d9cca69fe2595896de86e120d - () https://git.kernel.org/stable/c/16727e442568a46d9cca69fe2595896de86e120d - Patch
References () https://git.kernel.org/stable/c/36991c1ccde2d5a521577c448ffe07fcccfe104d - () https://git.kernel.org/stable/c/36991c1ccde2d5a521577c448ffe07fcccfe104d - Patch
References () https://git.kernel.org/stable/c/9e9841e232b51171ddf3bc4ee517d5d28dc8cad6 - () https://git.kernel.org/stable/c/9e9841e232b51171ddf3bc4ee517d5d28dc8cad6 - Patch
References () https://git.kernel.org/stable/c/fec1f9e9a650e8e7011330a085c77e7bf2a08ea9 - () https://git.kernel.org/stable/c/fec1f9e9a650e8e7011330a085c77e7bf2a08ea9 - Patch
First Time Linux linux Kernel
Linux
CWE CWE-416

21 May 2025, 20:24

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: Corrección de UAF en __close_file_table_ids. Es posible un use-after-free si un hilo destruye el archivo mediante __ksmbd_close_fd mientras otro hilo mantiene una referencia a él. Las comprobaciones existentes en fp->refcount no son suficientes para evitarlo. La corrección aplica ft->lock a la sección que elimina el archivo de la tabla de archivos. Esto impide que dos hilos adquieran el mismo puntero de archivo mediante __close_file_table_ids, así como otras funciones que recuperan un archivo del IDR y que ya utilizan este mismo bloqueo.

20 May 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-20 16:15

Updated : 2025-11-17 12:57

NVD link : CVE-2025-37952

Mitre link : CVE-2025-37952

CVE.ORG link : CVE-2025-37952

JSON object : View

Products Affected

linux

CWE
CWE-416

Use After Free