CVE-2025-40119

CVE-2025-40119 affects the Linux kernel ext4 subsystem. The root cause is a potential null dereference in ext4_mb_init() where ext4_mb_avg_fragment_size_destroy() could be invoked with sbi->s_mb_avg_fragment_size uninitialized (e.g., groupinfo slab cache allocation failure), due to missing nul...