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CVE-2026-93238: 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: s390/vfio-ap: fix potential use of uninitialized apm_filtered bitmap The DECLARE_BITMAP(apm_filtered, AP_DEVICES) macro allocates the bitmap on the stack without zero-initializing it. In vfio_ap_mdev_hot_plug_cfg(), the vfio_ap_mdev_filter_matrix() function is only called to initialize and populate apm_filtered if either filter_adapters or filter_domains is true. If the hot plug configuration change only adds control domains (meaning filter_cdoms is true, but filter_adapters and filter_domains are both false), vfio_ap_mdev_filter_matrix() is bypassed. Consequently, apm_filtered is passed to reset_queues_for_apids() with uninitialized stack garbage. This can cause reset_queues_for_apids() to interpret arbitrary stack garbage bits as valid APIDs to reset, potentially performing unintended guest hardware queue resets. Fix this by zero-initializing the apm_filtered bitmap at the beginning of vfio_ap_mdev_hot_plug_cfg() using bitmap_zero().

    Засегнати продукти

    • Linux Linux: eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 преди 4ba8a08f5f26ed59f356a6318bca3aa7cc0af3e2; eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 преди f73db632524320d2b93bc8534be8ea875053502d; eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 преди 6d554f2571e6b4db242593ba561efd6a6d1f99a9; eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 преди 09548edc6114f1eb1035b30795e893204ef45b85; eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 преди bf09b9d7cd7890bc3a3b7eb63d5ece15f88bfde7
    • Linux Linux: 6.0; преди 6.0; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; от 7.3 нататък

    История

    • 24 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-93238: Linux | freedomonline.bg