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CVE-2026-90426: Linux

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CVSS

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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: iommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs tegra241_cmdqv_remove() tears each VINTF down first, then calls free_irq(). Tearing a VINTF down frees vintf0 and clears cmdqv->vintfs[0]. An error in that window makes tegra241_cmdqv_isr() read the stale slot and hand it to tegra241_vintf0_handle_error(), which dereferences a NULL or freed pointer. Free the IRQ before tearing the VINTFs down. free_irq() waits for in-flight handlers to finish and blocks new ones, so no ISR can observe a VINTF as it is torn down. Note: a user-owned VINTF (viommu) could outlive this teardown, which unmaps cmdqv->base and frees cmdqv->vintfs, so a later viommu close then touches freed memory. This is neither introduced nor fixed here: a physical IOMMU is not a pluggable device, so iommufd by design holds no reference on the one behind a viommu, and this teardown is not expected while that viommu is still alive.

    Засегнати продукти

    • Linux Linux: 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 735698e81f798b4c02dcb6291ffbdd1b962c8c66; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 421f5ab135cd4a1353891e5bf2602cfc3c01afc7; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 61f0d437988e5730b04442f6a7d30a9907339f2a
    • Linux Linux: 6.12; преди 6.12; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-90426: Linux | freedomonline.bg