Vulnerability in Linux Kernel Affecting io_uring Functionality

CVE-2025-40291

What is CVE-2025-40291?

A vulnerability in the Linux kernel's io_uring functionality has been identified, where the io_estimate_bvec_size() function experiences truncation of the calculated number of segments. This issue precipitates potential data corruption due to improper handling of integer values, which could jeopardize the integrity of system operations. It's crucial for users to stay informed about the implications and apply necessary kernel updates to mitigate these risks.

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