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CVE-2025-39742

In the Linux kernel, the following vulnerability has been resolved: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() The function divides numbe…

Impact

In the Linux kernel, the following vulnerability has been resolved: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() The function divides number of online CPUs by num_core_siblings, and later checks the divider by zero. This implies a possibility to get and divide-by-zero runtime error. Fix it by moving the check prior to division. This also helps to save one indentation level.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.8 before 5.4.297
from 5.5 before 5.10.241
from 5.11 before 5.15.190
from 5.16 before 6.1.149
from 6.2 before 6.6.103
from 6.7 before 6.12.43
DebianDebian Linux
Version 11.0

Weakness classification

CWE-369

References