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.

Classification

CVE ID: CVE-2025-22049

Affected Products

Vendor: Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 5.04% (scored less or equal to compared to others)

EPSS Date: 2025-04-20 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-22049
https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a
https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e
https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82
https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f
https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82
https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720

Timeline