CVE-2025-39742

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2025-39742
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39742.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-39742
Downstream
Related
Published
2025-09-11T16:52:16.339Z
Modified
2026-03-12T02:17:20.190131Z
Summary
RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()
Details

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

RDMA: hfi1: fix possible divide-by-zero in findhwthread_mask()

The function divides number of online CPUs by numcoresiblings, 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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39742.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b094a36f90975373c3a241839869217a65f17d81
Fixed
9bba1a9994c523b44db64f63b564b4719ea2b7ef
Fixed
1a7cf828ed861de5be1aff99e10f114b363c19d3
Fixed
9d3211cb61a0773a2440d0a0698c1e6e7429f907
Fixed
4b4317b0d758ff92ba96f4e448a8992a6fe607bf
Fixed
89fdac333a17ed990b41565630ef4791782e02f5
Fixed
9b05e91afe948ed819bf87d7ba0fccf451ed79a6
Fixed
31d0599a23efdbfe579bfbd1eb8f8c942f13744d
Fixed
ac53f377393cc85156afdc90b636e84e544a6f96
Fixed
59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-39742.json"