CVE-2025-70100

Katalog CVE

CVSS 5.5 · Medium EPSS 0,16%

Kerentanan Divide By Zero pada gkostka lwext4. Skor CVSS 3.1 5.5 (Medium) menurut CISA ADP.

Deskripsi (NVD)

A divide-by-zero vulnerability in the ext4_block_set_lb_size function in src/ext4_blockdev.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 or image processing and leads to a Floating-Point Exception (FPE) under sanitizers or a runtime crash in standard builds due to missing validation of lb_size.

Rincian

Terbit di NVD

3 Juni 2026

Terakhir diubah

22 Juli 2026

Status NVD

Modified

CVSS 3.1

5.5 (Medium), sumber CISA ADP
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-369: Divide By Zero

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 4,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/gkostka/lwext4/issues/90 exploit · issue tracking · patch
• https://infosec.exchange/@sigdevel/116668952003072580 exploit · patch · advisory pihak ketiga
• https://github.com/sigdevel/pocs/blob/main/res/lwext4/2/sig8_2_lwext4_ext4_blockdev_c_127 exploit
• http://www.openwall.com/lists/oss-security/2026/06/29/5