CVE-2026-72414
Received Received - Intake

BaseFortify

Publication date: 2026-08-15

Last updated on: 2026-08-15

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: sja1105: round up PTP perout pin duration pin_duration is converted from the user-provided period to SJA1105 clock ticks and is later passed as the cycle_time argument to future_base_time(). Very small period values may become zero after the conversion, which can lead to a division by zero in future_base_time(). Round zero pin_duration up to 1 tick so that the smallest unsupported periods use the minimum non-zero hardware duration instead of passing zero to future_base_time().

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Meta Information

Published
2026-08-15
Last Modified
2026-08-15
Generated
2026-08-15
AI Q&A
2026-08-15
EPSS Evaluated
N/A
NVD
CVE-2026-72414
EUVD
EUVD-2026-59313

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

CWE
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a Linux kernel vulnerability in the DSA SJA1105 driver. It involves a division by zero issue in the PTP perout pin duration handling. When a very small period value is converted to clock ticks, it may become zero. This zero value is then passed to future_base_time(), causing a division by zero error.

Impact Analysis

The vulnerability could cause system crashes or instability if exploited. It specifically affects systems using the SJA1105 network switch driver with PTP (Precision Time Protocol) features. Attackers might trigger this by sending maliciously crafted period values.

Mitigation Strategies

Update the Linux kernel to the latest patched version to resolve the division by zero issue in the SJA1105 PTP perout pin duration handling.

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