CVE-2025-22049

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-22049
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Increase ARCH_DMA_MINALIGN up to 16 ARCH_DMA_MINALIGN is 1 by default, but some LoongArch-specific devices (such as APBDMA) require 16 bytes alignment. When the data buffer length is too small, the hardware may make an error writing cacheline. Thus, it is dangerous to allocate a small memory buffer for DMA. It's always safe to define ARCH_DMA_MINALIGN as L1_CACHE_BYTES but unnecessary (kmalloc() need small memory objects). Therefore, just increase it to 16.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82 Patch
https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e Patch
https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720 Patch
https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82 Patch
https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f Patch
https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

31 Oct 2025, 20:20

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: LoongArch: Aumentar ARCH_DMA_MINALIGN hasta 16. ARCH_DMA_MINALIGN es 1 por defecto, pero algunos dispositivos específicos de LoongArch (como APBDMA) requieren una alineación de 16 bytes. Cuando la longitud del búfer de datos es demasiado pequeña, el hardware puede cometer un error al escribir la línea de caché. Por lo tanto, es peligroso asignar un búfer de memoria pequeño para DMA. Siempre es seguro definir ARCH_DMA_MINALIGN como L1_CACHE_BYTES, pero no es necesario (kmalloc() requiere objetos de memoria pequeños). Por lo tanto, simplemente auméntelo a 16.
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82 - () https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82 - Patch
References () https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e - () https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e - Patch
References () https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720 - () https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720 - Patch
References () https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82 - () https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82 - Patch
References () https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f - () https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f - Patch
References () https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a - () https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a - Patch

16 Apr 2025, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-16 15:15

Updated : 2025-10-31 20:20

NVD link : CVE-2025-22049

Mitre link : CVE-2025-22049

CVE.ORG link : CVE-2025-22049

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo