Buffer Overflow Vulnerability in Linux Kernel ext4 by Linux Foundation

CVE-2025-71123

What is CVE-2025-71123?

A buffer overflow vulnerability exists in the Linux Kernel's ext4 filesystem, specifically related to the handling of the 's_mount_opts' field. If a non-NUL-term string is provided in user space that exceeds the expected length, it triggers a warning indicating a detected buffer overflow. This vulnerability can lead to instability in the system and potential security risks. Developers are urged to ensure that user inputs adhere to the NUL-termination requirements and the predefined buffer size to prevent exploitation.

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