Vulnerability in Linux Kernel's XFRM Algorithms and Encapsulation Handling

CVE-2023-53684

What is CVE-2023-53684?

A vulnerability in the Linux kernel affects the xfrm subsystem, specifically in how xfrm algorithms and encapsulation templates dump data to user-space. This issue arises from improper handling of padding in structures, which may result in the exposure of random, potentially sensitive data. The recent patch addresses this concern by ensuring that padding bytes are zeroed out before being copied to user-space, thereby enhancing the integrity and confidentiality of the data transmitted.

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