CVEvulnerability
CVE-2025-39742
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-09-11
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-369
Description
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 configurations
• linux linux kernel (>= 4.8 < 5.4.297)
• linux linux kernel (>= 5.5 < 5.10.241)
• linux linux kernel (>= 5.11 < 5.15.190)
• linux linux kernel (>= 5.16 < 6.1.149)
• linux linux kernel (>= 6.2 < 6.6.103)
• linux linux kernel (>= 6.7 < 6.12.43)
• linux linux kernel (>= 6.13 < 6.15.11)
• linux linux kernel (>= 6.16 < 6.16.2)
• debian debian linux 11.0
Related
Weakness · CWE (1)
- CWE-369 Divide By Zero weakness
References
- https://git.kernel.org/stable/c/1a7cf828ed861de5be1aff99e10f114b363c19d3 Patch
- https://git.kernel.org/stable/c/31d0599a23efdbfe579bfbd1eb8f8c942f13744d Patch
- https://git.kernel.org/stable/c/4b4317b0d758ff92ba96f4e448a8992a6fe607bf Patch
- https://git.kernel.org/stable/c/59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a Patch
- https://git.kernel.org/stable/c/89fdac333a17ed990b41565630ef4791782e02f5 Patch
- https://git.kernel.org/stable/c/9b05e91afe948ed819bf87d7ba0fccf451ed79a6 Patch
- https://git.kernel.org/stable/c/9bba1a9994c523b44db64f63b564b4719ea2b7ef Patch
- https://git.kernel.org/stable/c/9d3211cb61a0773a2440d0a0698c1e6e7429f907 Patch
- https://git.kernel.org/stable/c/ac53f377393cc85156afdc90b636e84e544a6f96 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html cert-portal.siemens.com