{"apiVersion":"1.0","identifier":"CVE-2026-53996","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.","publishedAt":"2026-08-12T13:17:22","lastModifiedAt":"2026-08-12T16:17:04","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53996","cvssScore":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00094,"riskScore":0.71,"affectedProduct":"NetBSD","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-53996","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-53996","en":"https://www.redsauce.net/en/cves/CVE-2026-53996","fr":"https://www.redsauce.net/fr/cves/CVE-2026-53996","pt":"https://www.redsauce.net/pt/cves/CVE-2026-53996","de":"https://www.redsauce.net/de/cves/CVE-2026-53996","sk":"https://www.redsauce.net/sk/cves/CVE-2026-53996","el":"https://www.redsauce.net/el/cves/CVE-2026-53996"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-53996"}}