CVE-2024-42102

Severity CVSS v4.0:

Pending analysis

Type:

CWE-369 Divide By Zero

Publication date:

30/07/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: Revert "mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again" Patch series "mm: Avoid possible overflows in dirty throttling". Dirty throttling logic assumes dirty limits in page units fit into 32-bits. This patch series makes sure this is true (see patch 2/2 for more details). This patch (of 2): This reverts commit 9319b647902cbd5cc884ac08a8a6d54ce111fc78. The commit is broken in several ways. Firstly, the removed (u64) cast from the multiplication will introduce a multiplication overflow on 32-bit archs if wb_thresh * bg_thresh >= 1

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

4.70

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.19.307 (including)	4.19.318 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.4.269 (including)	5.4.280 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.10.210 (including)	5.10.222 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.15.149 (including)	5.15.163 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.1.79 (including)	6.1.98 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6.18 (including)	6.6.39 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.8 (including)	6.9.9 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-42102

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools