CVE-2025-39742
Full vulnerability record from the local CVENow database.
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.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-11 17:15:36.733000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-11T17:15:36.733",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()\n\nThe function divides number of online CPUs by num_core_siblings, and\nlater checks the divider by zero. This implies a possibility to get\nand divide-by-zero runtime error. Fix it by moving the check prior to\ndivision. This also helps to save one indentation level."
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nRDMA: hfi1: corrección de posible división por cero en find_hw_thread_mask()\n\nLa función divide el número de CPUs en línea por num_core_siblings, y luego comprueba el divisor por cero. Esto implica la posibilidad de obtener un error de tiempo de ejecución de división por cero. Se soluciona moviendo la comprobación antes de la división. Esto también ayuda a ahorrar un nivel de indentación."
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