BaseFortify

Publication date: 2025-10-01

Last updated on: 2026-01-16

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() rules is allocated in ethtool_get_rxnfc and the size is determined by rule_cnt from user space. So rule_cnt needs to be check before using rules to avoid OOB writing or NULL pointer dereference.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2025-10-01

Last Modified

2026-01-16

Generated

2026-07-06

AI Q&A

2025-10-01

EPSS Evaluated

2026-07-05

NVD

CVE-2023-53495

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 5.2 (inc) to 5.4.257 (exc)
linux	linux_kernel	From 5.5 (inc) to 5.10.195 (exc)
linux	linux_kernel	From 5.11 (inc) to 5.15.132 (exc)
linux	linux_kernel	From 5.16 (inc) to 6.1.54 (exc)
linux	linux_kernel	From 6.2 (inc) to 6.5.4 (exc)
linux	linux_kernel	6.6

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a possible out-of-bounds (OOB) write in the Linux kernel's mvpp2 ethernet driver, specifically in the function mvpp2_ethtool_get_rxnfc(). The issue arises because the 'rules' buffer is allocated based on a size determined by 'rule_cnt' from user space, but 'rule_cnt' is not properly checked before use. This can lead to writing outside the allocated memory or a NULL pointer dereference.

Impact Analysis

The vulnerability can cause memory corruption due to out-of-bounds writes or cause the kernel to dereference a NULL pointer, potentially leading to system crashes, instability, or denial of service on affected Linux systems using the mvpp2 ethernet driver.

Hi! I’m here to help you understand CVE-2023-53495. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70