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CVE-2025-70100

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

lwext4是Grzegorz Kostka个人开发者的一个为微控制器提供ext2/3/4文件系统的嵌入式库。 lwext4 1.0.0版本存在安全漏洞，该漏洞源于ext4_block_set_lb_size函数中缺少对lb_size的验证，导致除零错误，可能造成拒绝服务。

AI Predicted 5.5 Difficulty: Easy EPSS 0.16% · P6

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2025-70100

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
lwext4 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
lwext4是Grzegorz Kostka个人开发者的一个为微控制器提供ext2/3/4文件系统的嵌入式库。 lwext4 1.0.0版本存在安全漏洞，该漏洞源于ext4_block_set_lb_size函数中缺少对lb_size的验证，导致除零错误，可能造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2025-70100

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III. Intelligence Information for CVE-2025-70100

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Vendor Advisories for CVE-2025-70100 (1)

Proof of Concept for CVE-2025-70100 (1)

Other References for CVE-2025-70100 (1)

Same Patch Batch · n/a · 2026-06-03 · 32 CVEs total

CVE-2026-10766 3.6 LOW mlrun DataFrame Hash helpers.py mlrun.utils.helpers.calculate_dataframe_hash weak hash
CVE-2026-10705 3.1 LOW dask HLL hyperloglog.py nunique_approx resource consumption
CVE-2025-70101 lwext4 安全漏洞
CVE-2025-60477 GPAC 安全漏洞
CVE-2026-37700 MaxSite CMS 安全漏洞
CVE-2026-37462 GoBGP 安全漏洞
CVE-2026-37460 FRRouting 安全漏洞
CVE-2026-39107 Moonshot AI Kimi AI 安全漏洞
CVE-2026-36606 Mercusys AC12G 安全漏洞
CVE-2026-36605 Mercusys AC12G 安全漏洞
CVE-2026-36604 Mercusys AC12G 安全漏洞
CVE-2026-36616 Mercusys AC12G 安全漏洞
CVE-2026-36615 Mercusys AC12G 安全漏洞
CVE-2026-36608 Mercusys AC12G 安全漏洞
CVE-2026-36612 Mercusys AC12G 安全漏洞
CVE-2026-36610 Mercusys AC12G 安全漏洞
CVE-2026-36618 Mercusys AC12G 安全漏洞
CVE-2026-36609 Mercusys AC12G 安全漏洞
CVE-2026-36603 Mercusys AC12G 安全漏洞
CVE-2026-36607 Mercusys AC12G 安全漏洞

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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Same vendor: n/a

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