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CVE-2026-72474: 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: dmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor For architectures like Microblaze or arm64 (where this IP is used), DMA_DIRECT_REMAP is set which means that dma_alloc_coherent() might remap (and hence vmalloc()) some memory. This became visible in a design where dma_direct_use_pool() is not possible. With the above, when calling dma_free_coherent(), vunmap() would be called from softirq context and thus leading to a BUG(). To fix it, use a dma pool that is allocated in .device_alloc_chan_resources() and allocate blocks from it. The key point is that now dma_pool_free() is used in axi_dmac_free_desc() to free the blocks and that just frees the blocks from the pool in the sense they can be used again. In other words, no actual call to dma_free_coherent() happens. That only happens when destroying the pool in axi_dmac_free_chan_resources() which does not happen in any interrupt context.

    Засегнати продукти

    • Linux Linux: 3f8fd25936ee5f52596f10d420f650c5b5e3285f преди a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56; 3f8fd25936ee5f52596f10d420f650c5b5e3285f преди c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9; 3f8fd25936ee5f52596f10d420f650c5b5e3285f преди 65e82fa24965b2eb6ad9412f6c530ed9a50a625f; 3f8fd25936ee5f52596f10d420f650c5b5e3285f преди 9e942c8579130e62734c14338e9f451780669164
    • Linux Linux: 6.8; преди 6.8; 6.12.97 до 6.12.*; 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-2026-72474: Linux | freedomonline.bg