CVE-2024-49977

Severity CVSS v4.0:

Pending analysis

Type:

CWE-369 Divide By Zero

Publication date:

21/10/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix zero-division error when disabling tc cbs The commit b8c43360f6e4 ("net: stmmac: No need to calculate speed divider when offload is disabled") allows the "port_transmit_rate_kbps" to be set to a value of 0, which is then passed to the "div_s64" function when tc-cbs is disabled. This leads to a zero-division error. When tc-cbs is disabled, the idleslope, sendslope, and credit values the credit values are not required to be configured. Therefore, adding a return statement after setting the txQ mode to DCB when tc-cbs is disabled would prevent a zero-division error.

Impact

Vector 3.x

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.10.221 (including)	5.10.227 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.15.162 (including)	5.15.168 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.1.96 (including)	6.1.113 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6.36 (including)	6.6.55 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.9.7 (including)	6.10 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.10 (including)	6.10.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.11 (including)	6.11.3 (excluding)

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

CVE-2024-49977

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools