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.
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82 Patch
- git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e Patch
- git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720 Patch
- git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82 Patch
- git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f Patch
- git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a Patch
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 12 · as of 7 November 2026
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