Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38086

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
28/06/2025
Last modified:
17/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: ch9200: fix uninitialised access during mii_nway_restart<br /> <br /> In mii_nway_restart() the code attempts to call<br /> mii-&gt;mdio_read which is ch9200_mdio_read(). ch9200_mdio_read()<br /> utilises a local buffer called "buff", which is initialised<br /> with control_read(). However "buff" is conditionally<br /> initialised inside control_read():<br /> <br /> if (err == size) {<br /> memcpy(data, buf, size);<br /> }<br /> <br /> If the condition of "err == size" is not met, then<br /> "buff" remains uninitialised. Once this happens the<br /> uninitialised "buff" is accessed and returned during<br /> ch9200_mdio_read():<br /> <br /> return (buff[0] | buff[1]

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:*:*:*:*:*:*:*:* 4.3.1 (including) 5.4.295 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.239 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.186 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.142 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.95 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.35 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.15.4 (excluding)
cpe:2.3:o:linux:linux_kernel:4.3:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.3:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.3:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.3:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.3:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.3:rc7:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools