🔴 《高危安全漏洞：CVE-2026-53171》

CVSS 评分: 高危（8.8）　　CVE ID: CVE-2026-53171

漏洞描述

In the Linux kernel, the following vulnerability has been resolved:

accel/ethosu: fix arithmetic issues in dma_length()

dma_length() derives DMA region usage from command stream values and
updates region_size[]:

len = ((len + stride[0]) * size0 + stride[1]) * size1
region_size[region] = max(..., len + dma->offset)

Several arithmetic issues can corrupt the derived region size:

  • signed stride values may underflow when added to len
  • intermediate multiplications may overflow
  • len + dma->offset may overflow during region_size updates
  • dma_length() error returns were not validated by the caller

region_size[] is later used by ethosu_job.c to validate command stream
accesses against GEM buffer sizes. Arithmetic wraparound can therefore
under-report region usage and bypass the bounds validation.

Fix by validating signed additions, using overflow helpers for
multiplications and offset updates, and propagating dma_length()
failures to the caller.

字段 值
CVE ID CVE-2026-53171
CVSS 评分 8.8
严重程度 高危
发布时间 2026-06-25
状态 Received

数据来源: NVD | 获取时间: 2026-06-28 18:14