Linux Kernel Vulnerability in SMB2 Handling Affecting CIFS Client

CVE-2023-53377

What is CVE-2023-53377?

A vulnerability in the Linux Kernel related to the SMB2 compound operations presents a risk of use-after-free, which can lead to unpredictable behavior and difficult debugging challenges. The issue arises from improper management of memory during processing of CIFS client requests. The vulnerability was discovered during stress tests with KASAN (Kernel Address Sanitizer) enabled, prompting a fix that reorders the memory freeing process to occur after its final usage. This ensures the integrity of resources and mitigates potential exploitation.

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