CVE Vulnerability in Linux Kernel: JFS File System Check Issues

CVE-2023-53766

What is CVE-2023-53766?

A vulnerability has been identified in the Linux kernel specifically related to the JFS file system. This issue arises during the transaction initialization process (txBegin) where there is no prior validation for a read-only mounted filesystem. The lack of this check could potentially lead to a NULL pointer dereference. A subsequent patch has been introduced to enhance the safety of the kernel by adding the necessary validation, thus preventing errors associated with improper filesystem state during critical transactions.

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