BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-12-11

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: ixgbe: fix incorrect map used in eee linkmode incorrectly used ixgbe_lp_map in loops intended to populate the supported and advertised EEE linkmode bitmaps based on ixgbe_ls_map. This results in incorrect bit setting and potential out-of-bounds access, since ixgbe_lp_map and ixgbe_ls_map have different sizes and purposes. ixgbe_lp_map[i] -> ixgbe_ls_map[i] Use ixgbe_ls_map for supported and advertised linkmodes, and keep ixgbe_lp_map usage only for link partner (lp_advertised) mapping.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2025-10-01

Last Modified

2025-12-11

Generated

2026-07-06

AI Q&A

2025-10-01

EPSS Evaluated

2026-07-05

NVD

CVE-2025-39922

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.9 (inc) to 6.12.46 (exc)
linux	linux_kernel	From 6.13 (inc) to 6.16.6 (exc)
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17
linux	linux_kernel	6.17

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Impact Analysis

This vulnerability can lead to incorrect configuration of EEE link modes and potential out-of-bounds memory access in the ixgbe driver. Such out-of-bounds access could cause system instability, crashes, or potentially allow an attacker to exploit the kernel for further malicious actions, impacting system reliability and security.

Executive Summary

This vulnerability in the Linux kernel's ixgbe driver involves the incorrect use of the ixgbe_lp_map in loops that were intended to populate the supported and advertised Energy Efficient Ethernet (EEE) linkmode bitmaps based on ixgbe_ls_map. Because ixgbe_lp_map and ixgbe_ls_map have different sizes and purposes, this misuse results in incorrect bit settings and potential out-of-bounds memory access. The fix involves using ixgbe_ls_map for supported and advertised linkmodes and reserving ixgbe_lp_map usage only for link partner (lp_advertised) mapping.

Hi! I’m here to help you understand CVE-2025-39922. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70