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    2 vulnerabilities found for NetBSD by The NetBSD Foundation

    CVE-2026-53996 (GCVE-0-2026-53996)

    Vulnerability from nvd – Published: 2026-08-12 12:42 – Updated: 2026-08-12 15:24
    VLAI
    Title
    NetBSD hdaudio(4) Driver Privilege Bypass Use-After-Free via HDAUDIO_FGRP_SETCONFIG ioctl
    Summary
    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.
    Severity
    7.3 (High)
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    7 (High)
    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-12 15:24 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    The NetBSD Foundation NetBSD Affected: 0 , ≤ 11 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-12 00:00
    Credits
    Nasm
    Show details on NVD website
    To clipboard 

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    CVE-2026-53996 (GCVE-0-2026-53996)

    Vulnerability from cvelistv5 – Published: 2026-08-12 12:42 – Updated: 2026-08-12 15:24
    VLAI
    Title
    NetBSD hdaudio(4) Driver Privilege Bypass Use-After-Free via HDAUDIO_FGRP_SETCONFIG ioctl
    Summary
    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.
    Severity
    7.3 (High)
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    7 (High)
    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-12 15:24 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    The NetBSD Foundation NetBSD Affected: 0 , ≤ 11 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-12 00:00
    Credits
    Nasm
    Show details on NVD website
    To clipboard 

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