Out-of-Bounds Write Vulnerability in Linux Kernel's NTFS3 Handling

CVE-2026-31716

What is CVE-2026-31716?

A vulnerability exists in the Linux kernel's NTFS3 filesystem code affecting journal replay functionality. This issue arises from the lack of validation for the 'used' field in file records during journal processing. An attacker could exploit this by corrupting filesystem entries, causing memory mismanagement and potential for extensive data manipulation. Implementing a check for the 'used' value ensures robust handling, preventing unexpected behaviors such as buffer overflows. Proper validation contributes significantly to the overall stability and security of the kernel during filesystem operations.

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