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Vulnerability DatabaseCVE-2025-39849
CVE-2025-39849:
Linux Kernel vulnerability analysis and mitigation
Overview
A vulnerability was discovered in the Linux kernel's WiFi subsystem, specifically in the cfg80211 SME (Station Management Entity) component. The issue, identified as CVE-2025-39849, was disclosed on September 19, 2025, and affects the SSID length handling in the _cfg80211connect_result() function (NVD).
Technical details
The vulnerability occurs when the ssid->datalen exceeds IEEE80211MAXSSIDLEN (32 bytes) in the _cfg80211connectresult() function of the cfg80211 subsystem. Without proper bounds checking, this condition leads to memory corruption in the Linux kernel's WiFi handling code (NVD).
Impact
If exploited, this vulnerability can lead to memory corruption in the Linux kernel, potentially resulting in system instability or crashes (NVD).
Mitigation and workarounds
The vulnerability has been addressed in various Linux distributions. Debian has included fixes in version 6.12.48-1 of the Linux kernel package (Debian). Ubuntu has marked this as a medium priority issue and provided updates for affected versions (Ubuntu).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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