CVE-2025-22049: falha de alta gravidade em Linux
LoongArch: Increase ARCH_DMA_MINALIGN up to 16
Publicada em · Atualizada em
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.8epss 0.2%
probabilidade de exploração
0.2%top 89% das CVEs
exploração observada
nãonenhuma fonte reporta
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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Referências
https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112ehttps://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0fhttps://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54ahttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html