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CVE-2026-64376: 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: firmware_loader: fix device reference leak in firmware_upload_register() firmware_upload_register() -> fw_create_instance() -> device_initialize() After fw_create_instance() succeeds, the lifetime of the embedded struct device is expected to be managed through the device core reference counting, since fw_create_instance() has already called device_initialize(). In firmware_upload_register(), if alloc_lookup_fw_priv() fails after fw_create_instance() succeeds, the code reaches free_fw_sysfs and frees fw_sysfs directly instead of releasing the device reference with put_device(). This may leave the reference count of the embedded struct device unbalanced, resulting in a refcount leak. The issue was identified by a static analysis tool I developed and confirmed by manual review. Fix this by using put_device(fw_dev) in the failure path and letting fw_dev_release() handle the final cleanup, instead of freeing the instance directly from the error path.

    Засегнати продукти

    • Linux Linux: 97730bbb242cde22b7140acd202ffd88823886c9 преди 517676ec7dfca064e08f94007a4abd21969de0a0; 97730bbb242cde22b7140acd202ffd88823886c9 преди 46d403da376a8b7c1187193294953816e1a8d7fe; 97730bbb242cde22b7140acd202ffd88823886c9 преди 2619b47a0c8114eef980a56ade7e3ef4b58eb384; 97730bbb242cde22b7140acd202ffd88823886c9 преди 92f41769e5fd16bcd9ba97500d0517332e0a5b45; 97730bbb242cde22b7140acd202ffd88823886c9 преди 15432f19562fdb9199cce6d9fc24db12c71ed574; 97730bbb242cde22b7140acd202ffd88823886c9 преди 896df22ee57648b0c505bd76ddbc6b2341834696
    • Linux Linux: 5.19; преди 5.19; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък

    История

    • 25 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-64376: Linux | freedomonline.bg