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CVE-2026-74421: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: drm/rockchip: dw_dp: Switch to drmm_kzalloc() Driver makes use of drmm_encoder_init() to initialize the encoder and automatically handle the cleanup by registering drm_encoder_cleanup() with drmm_add_action(). However, the internal structure containing the encoder part gets allocated with devm_kzalloc(), which happens while component_bind_all() is being called from Rockchip DRM driver. The component framework further ensures it is deallocated as part of releasing all the resources claimed during bind, which is triggered from component_unbind_all(). When the reference to the DRM device gets eventually dropped via drm_dev_put() in rockchip_drm_unbind(), drmm_encoder_alloc_release() attempts to access the now released encoder structure, leading to use-after-free. Ensure driver's internal structure is still reachable on encoder cleanup by switching from a device-managed allocation to a drm-managed one.

    Засегнати продукти

    • Linux Linux: d68ba7bac9555d05e2f5b310c898b2a5c7eff174 преди 0d60b835bca42f0f790689dd47819ed881a92ccc; d68ba7bac9555d05e2f5b310c898b2a5c7eff174 преди 6b0b92d1110eccccbd5ba2949bd2b9fb6ea5fc12; d68ba7bac9555d05e2f5b310c898b2a5c7eff174 преди ed9da8d23020352ad24c528db09b5acdd78b81fd
    • Linux Linux: 6.18; преди 6.18; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

    История

    • 15 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-74421: Linux | freedomonline.bg