CVE-2025-38657

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: mcc: prevent shift wrapping in rtw89_core_mlsr_switch() The "link_id" value comes from the user via debugfs. If it's larger than BITS_PER_LONG then that would result in shift wrapping and potentially an out of bounds access later. In fact, we can limit it to IEEE80211_MLD_MAX_NUM_LINKS (15). Fortunately, only root can write to debugfs files so the security impact is minimal.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e	Patch
https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:6.16:*:*:*:*:*:*:*

History

26 Nov 2025, 16:32

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e -~~	() https://git.kernel.org/stable/c/417cfa9cc44fbe6bceab786f9a4ee5a210f1288e - Patch
References	~~() https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3 -~~	() https://git.kernel.org/stable/c/53cf488927a0f79968f9c03c4d1e00d2a79731c3 - Patch
CPE		cpe:2.3:o:linux:linux_kernel:6.16:::::::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.1
CWE		CWE-125
First Time		Linux linux Kernel Linux

Information

Published : 2025-08-22 16:15

Updated : 2025-11-26 16:32

NVD link : CVE-2025-38657

Mitre link : CVE-2025-38657

CVE.ORG link : CVE-2025-38657

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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