Linux Kernel I/O Operation Buffer Handling Vulnerability

CVE-2023-52926

What is CVE-2023-52926?

A buffer handling issue has been discovered in the Linux kernel's I/O operations. The vulnerability arises during I/O reads when the IORING_OP_READ command does not correctly manage the provided buffer list if the read returns a negative value (other than -EAGAIN or -EIOCBQUEUED). This malfunction can potentially lead to a use-after-free situation if completion runs in a separate context, posing a risk for system integrity and stability. It is crucial for users of affected Linux kernel versions to apply the latest patches to mitigate the risks associated with this vulnerability.

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References