CVE-2025-39742

MEDIUM

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.

CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 9/11/2025Modified: 10/19/2026

Related Intelligence (1)

CRITICALData Breach

Siemens SIMATIC

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-134-10.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>SIMATIC CN 4100 contains multiple vulnerabilities which could potentially lead to a compromise in availability, integrity and confidentiality. Siemens has released a new version for SIMATIC CN 4100 and recommends to update to the late

CVE-2024-47704CVE-2024-57924
CISA Advisories

References (12)

https://git.kernel.org/stable/c/1a7cf828ed861de5be1aff99e10f114b363c19d3Patchhttps://git.kernel.org/stable/c/31d0599a23efdbfe579bfbd1eb8f8c942f13744dPatchhttps://git.kernel.org/stable/c/4b4317b0d758ff92ba96f4e448a8992a6fe607bfPatchhttps://git.kernel.org/stable/c/59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3aPatchhttps://git.kernel.org/stable/c/89fdac333a17ed990b41565630ef4791782e02f5Patchhttps://git.kernel.org/stable/c/9b05e91afe948ed819bf87d7ba0fccf451ed79a6Patchhttps://git.kernel.org/stable/c/9bba1a9994c523b44db64f63b564b4719ea2b7efPatchhttps://git.kernel.org/stable/c/9d3211cb61a0773a2440d0a0698c1e6e7429f907Patchhttps://git.kernel.org/stable/c/ac53f377393cc85156afdc90b636e84e544a6f96Patchhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing ListThird Party Advisoryhttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisoryhttps://cert-portal.siemens.com/productcert/html/ssa-032379.html