BaseFortify

Publication date: 2026-01-13

Last updated on: 2026-03-25

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: net: rose: fix invalid array index in rose_kill_by_device() rose_kill_by_device() collects sockets into a local array[] and then iterates over them to disconnect sockets bound to a device being brought down. The loop mistakenly indexes array[cnt] instead of array[i]. For cnt < ARRAY_SIZE(array), this reads an uninitialized entry; for cnt == ARRAY_SIZE(array), it is an out-of-bounds read. Either case can lead to an invalid socket pointer dereference and also leaks references taken via sock_hold(). Fix the index to use i.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-01-13

Last Modified

2026-03-25

Generated

2026-07-06

AI Q&A

2026-01-14

EPSS Evaluated

2026-07-05

NVD

CVE-2025-71086

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	6.7
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	From 6.13 (inc) to 6.18.4 (exc)
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	From 4.19.304 (inc) to 4.20 (exc)
linux	linux_kernel	From 5.10.206 (inc) to 5.10.248 (exc)
linux	linux_kernel	From 5.15.146 (inc) to 5.15.198 (exc)
linux	linux_kernel	From 5.4.266 (inc) to 5.5 (exc)
linux	linux_kernel	From 6.1.70 (inc) to 6.1.160 (exc)
linux	linux_kernel	From 6.6.9 (inc) to 6.6.120 (exc)
linux	linux_kernel	From 6.7.1 (inc) to 6.12.64 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-129	The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's net: rose component, specifically in the function rose_kill_by_device(). The function collects sockets into a local array and then iterates over them to disconnect sockets bound to a device being brought down. However, the loop incorrectly uses the index 'cnt' instead of 'i' when accessing the array. This causes the code to read uninitialized or out-of-bounds array entries, which can lead to invalid socket pointer dereferences and leaks of socket references.

Impact Analysis

The impact of this vulnerability includes potential invalid socket pointer dereferences, which can cause kernel crashes or instability. Additionally, it can lead to resource leaks due to leaked socket references, potentially degrading system performance or causing denial of service conditions.

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