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CVE-2026-45981: Linux

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: s390/cio: Fix device lifecycle handling in css_alloc_subchannel() `css_alloc_subchannel()` calls `device_initialize()` before setting up the DMA masks. If `dma_set_coherent_mask()` or `dma_set_mask()` fails, the error path frees the subchannel structure directly, bypassing the device model reference counting. Once `device_initialize()` has been called, the embedded struct device must be released via `put_device()`, allowing the release callback to free the container structure. Fix the error path by dropping the initial device reference with `put_device()` instead of calling `kfree()` directly. This ensures correct device lifetime handling and avoids potential use-after-free or double-free issues.

    Засегнати продукти

    • Linux Linux: e5dcf0025d7af58f525590ac86ac27cb44714e8d преди abb6e07f46a740cda4f07d1b561ae4eaa7a1df42; e5dcf0025d7af58f525590ac86ac27cb44714e8d преди f96c5ccf95ae5f27218c1ce2d6a3ad2d3e105424; e5dcf0025d7af58f525590ac86ac27cb44714e8d преди 6715560527e343a387e4a0d2e6c401748e89fa55; e5dcf0025d7af58f525590ac86ac27cb44714e8d преди c35cfbb5341ba05ad1b4476ffc3c21cc3ff8f603; e5dcf0025d7af58f525590ac86ac27cb44714e8d преди f65c75b0b9b5a390bc3beadcde0a6fbc3ad118f7
    • Linux Linux: 3.10; преди 3.10; 6.6.128 до 6.6.*; 6.12.75 до 6.12.*; 6.18.14 до 6.18.*; 6.19.4 до 6.19.*; 7.0 до *

    История

    • 27 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-45981: Linux | freedomonline.bg