CVE-2025-39742

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: A flaw exists in the Linux kernel related to RDMA and the hfi1 driver. A divide-by-zero error could occur within the find hw thread mask() function due to a division operation where the divisor, num core siblings, could be zero. This condition could lead to a runtime error. The issue was addressed by moving the check for a zero divisor before the division operation.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.