CVE-2025-70100

A divide-by-zero vulnerability in the ext4blocksetlbsize function in src/ext4blockdev.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by providing a malformed ext4 filesystem image that results in a zero logical block size. The vulnerability is triggered during mount o...

CVE-2025-70100

The lwext4 1.0.0 library is vulnerable to a divide-by-zero vulnerability in the ext4_block_set_lb_size function located in src/ext4_blockdev.c. The root cause is a lack of validation for the lb_size variable. An attacker can provide a malformed ext4 filesystem image with a zero logical block size...