Linux Kernel io_uring Race Condition Vulnerability in fdinfo Handling
A vulnerability in the Linux kernel's io_uring/fdinfo component has been addressed through a modification to the io_uring_show_fdinfo() function. The fix involves wrapping the function's operations in a trylock mechanism for the ctx->uring_lock. If the lock cannot be immediately acquired, the function will return without producing any output. This approach resolves a potential issue where reading the Submission Queue Entry (SQE) fields could be problematic during concurrent ring resizing operations. The change aims to improve the reliability and thread safety of the io_uring functionality in the Linux kernel.
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linux linux |
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linux linux kernel |
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