PT-2025-31072 · Linux+5 · Linux Kernel+5

Published 2025-07-11 · Updated 2026-03-17 · CVE-2025-38475

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contained a type confusion issue within the smc module related to the handling of inet sock structures. Specifically, the issue stemmed from allowing non-INET sockets to reuse INET infrastructure, leading to incorrect memory access and potential system crashes (oops). The vulnerability was identified through reports from syzbot, a fuzzing tool, which detected double-free calls and related errors during memory management. The root cause was identified as a type confusion where inet sock.inet opt was incorrectly interpreted as smc sock.clcsk data ready(), which is a function pointer in the text segment.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2025-10806

CVE-2025-38475

DSA-5975-1

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:02853-1

SUSE-SU-2025:02997-1

SUSE-SU-2025:03011-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

SUSE-SU-2025_02853-1

SUSE-SU-2025_02997-1

SUSE-SU-2025_03011-1

USN-7879-1

USN-7879-2

USN-7879-3

USN-7879-4

USN-7880-1

USN-7934-1

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1655

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38475.json · Exploit
• https://ubuntu.com/security/CVE-2025-38473 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7879-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39731 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7880-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38630 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38439 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38624 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:20081-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38586 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38573 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38475 · Security Note
• https://ubuntu.com/security/CVE-2025-39734 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38562 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-38475 · Vendor Advisory