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CVE-2026-23292: 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: scsi: target: Fix recursive locking in __configfs_open_file() In flush_write_buffer, &p->frag_sem is acquired and then the loaded store function is called, which, here, is target_core_item_dbroot_store(). This function called filp_open(), following which these functions were called (in reverse order), according to the call trace: down_read __configfs_open_file do_dentry_open vfs_open do_open path_openat do_filp_open file_open_name filp_open target_core_item_dbroot_store flush_write_buffer configfs_write_iter target_core_item_dbroot_store() tries to validate the new file path by trying to open the file path provided to it; however, in this case, the bug report shows: db_root: not a directory: /sys/kernel/config/target/dbroot indicating that the same configfs file was tried to be opened, on which it is currently working on. Thus, it is trying to acquire frag_sem semaphore of the same file of which it already holds the semaphore obtained in flush_write_buffer(), leading to acquiring the semaphore in a nested manner and a possibility of recursive locking. Fix this by modifying target_core_item_dbroot_store() to use kern_path() instead of filp_open() to avoid opening the file using filesystem-specific function __configfs_open_file(), and further modifying it to make this fix compatible.

    Засегнати продукти

    • Linux Linux: b0841eefd9693827afb9888235e26ddd098f9cef преди 3161ef61f121d4573cad5b57c92188dcd9b284b3; b0841eefd9693827afb9888235e26ddd098f9cef преди e8ef82cb6443d5f3260b1b830e17f03dda4229ea; b0841eefd9693827afb9888235e26ddd098f9cef преди 4fcfa424a581d823cb1a9676e3eefe6ca17e453a; b0841eefd9693827afb9888235e26ddd098f9cef преди 9a5641024fbfd9b24fe65984ad85fea10a3ae438; b0841eefd9693827afb9888235e26ddd098f9cef преди 142eacb50fb903a4c10dee7e67b6e79ebb36a582; b0841eefd9693827afb9888235e26ddd098f9cef преди 14d4ac19d1895397532eec407433c5d74d9da53b; 49824b5c875087a52672b0c8e8ecbefe6f773532; 09e21253d17f53bdb5aac0e0dbd057a29fcbe8d1; 0dfc45be875a378c2a3a4d6ed8e668ec8eb75073; 4.9.201 преди 4.10; 4.14.154 преди 4.15; 4.19.84 преди 4.20
    • Linux Linux: 5.3; преди 5.3; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.77 до 6.12.*; 6.18.17 до 6.18.*; 6.19.7 до 6.19.*; 7.0 до *
    • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: преди *

    История

    • 25 март 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-23292: Linux | freedomonline.bg