IM
IronMonkey Threat Research

CVE-2025-21844 HIGH

Published: 2025-03-12 | Last Modified: 2026-07-30 | Status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.

Additional Descriptions (1)

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: Agregar verificación para next_buffer en receive_encrypted_standard() Agregar verificación para el valor de retorno de cifs_buf_get() y cifs_small_buf_get() en receive_encrypted_standard() para evitar la desreferencia del puntero nulo.

CVSS Metrics

Base Score: 5.5 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Primary
en CWE-476
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-476

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd340176200> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36b25e600> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2d3af7fc0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd368d34ec0> Operating System
linux linux_kernel 5.10.211 <built-in method update of dict object at 0x7fd340175080> Operating System
linux linux_kernel 5.15.150 <built-in method update of dict object at 0x7fd340177980> Operating System
linux linux_kernel 6.14 <built-in method update of dict object at 0x7fd384e2a640> Operating System
linux linux_kernel 6.14 <built-in method update of dict object at 0x7fd384644b80> Operating System
linux linux_kernel 6.14 <built-in method update of dict object at 0x7fd384e2b640> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:5.10.211:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:5.15.150:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*

References