CVE-2025-22049

MEDIUM

Linux Kernel - Memory Alignment Issue in LoongArch DMA Operations

Title source: llm
STIX 2.1

Description

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.

Scores

CVSS v3 5.5
EPSS 0.0019
EPSS Percentile 8.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (20)
linux/Kernel 5.19.0 - 6.1.134linux
linux/Kernel 6.13.0 - 6.13.11linux
linux/Kernel 6.14.0 - 6.14.2linux
linux/Kernel 6.2.0 - 6.6.87linux
linux/Kernel 6.7.0 - 6.12.23linux
Linux/Linux < 5.19
Linux/Linux 5.19
Linux/Linux 6.1.134 - 6.1.*
Linux/Linux 6.12.23 - 6.12.*
Linux/Linux 6.13.11 - 6.13.*
... and 10 more
Published Apr 16, 2025
Tracked Since Feb 18, 2026