Tracker / CVE-2025-39742
CVE-2025-39742
Medium 5.5
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 and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel · 4.8 → 5.4.297 |
| linux | linux_kernel · 5.11 → 5.15.190 |
| linux | linux_kernel · 5.16 → 6.1.149 |
| linux | linux_kernel · 5.5 → 5.10.241 |
| linux | linux_kernel · 6.13 → 6.15.11 |
| linux | linux_kernel · 6.16 → 6.16.2 |
| linux | linux_kernel · 6.2 → 6.6.103 |
| linux | linux_kernel · 6.7 → 6.12.43 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.