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...

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...

EUVD-2025-210055

An out-of-bounds read in the ext4extbinsearchidx function in src/ext4extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before...

PT-2026-45934

Name of the Vulnerable Software and Affected Versions lwext4 version 1.0.0 Description A divide-by-zero issue exists in the ext4 block set lb size function within the src/ext4 blockdev.c file. This occurs when a malformed ext4 filesystem image with a zero logical block size is provided, leading t...

EUVD-2025-210054

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-2025-70101

An out-of-bounds read in the ext4extbinsearchidx function in src/ext4extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before...

CVE-2025-70101

The lwext4 1.0.0 library, an embedded library providing ext2/3/4 file systems for microcontrollers, contains an out-of-bounds read vulnerability in the ext4_ext_binsearch_idx function located in src/ext4_extent.c. The root cause is insufficient validation of extent header fields before performing...

lwext4 Heap Buffer Overflow DoS

The vulnerability of the ext4fsinit inodebitmap function in the lwext4 library involves a heap-buffer-overflow issue during the initialization of the inode bitmap. Exploiting this vulnerability allows an attacker to execute arbitrary code and cause service failures...

lwext4 Heap Buffer Overflow DoS

The vulnerability of the ext4blocksetlbsize function in the lwext4 library, which can be exploited by dividing by zero when processing an incorrect ext4 image. Exploiting this vulnerability may allow a remote attacker to cause service interruptions...