CyberRota Analysis
AI-GeneratedThe hdaudio(4) driver in NetBSD is vulnerable due to a missing access control check, allowing unprivileged local attackers to exploit the HDAUDIO_FGRP_SETCONFIG ioctl on /dev/hdaudioN device nodes. This can lead to a use-after-free race condition, potentially causing denial of service, kernel panic, or even local privilege escalation. Organizations using NetBSD should prioritize patching this vulnerability to mitigate risks associated with unauthorized access and system instability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
NetBSD's hdaudio(4) driver in sys/dev/hdaudio/hdaudio.c contains a missing access control vulnerability that allows unprivileged local attackers to invoke the HDAUDIO_FGRP_SETCONFIG ioctl without elevated permissions by exploiting the absence of an access check on /dev/hdaudioN device nodes. Attackers can repeatedly issue HDAUDIO_FGRP_SETCONFIG from one thread while keeping DMA and IRQs live from a second thread to trigger a use-after-free race condition in hdafg_detach() between stream_stop() and stream_disestablish(), where a latched DMA interrupt dereferences a freed callback pointer, resulting in outcomes ranging from audio-subsystem denial of service and kernel panic to potential local kernel privilege escalation.