CVE-2025-38112

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

03/07/2025

Last modified:

17/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved: net: Fix TOCTOU issue in sk_is_readable() sk->sk_prot->sock_is_readable is a valid function pointer when sk resides in a sockmap. After the last sk_psock_put() (which usually happens when socket is removed from sockmap), sk->sk_prot gets restored and sk->sk_prot->sock_is_readable becomes NULL. This makes sk_is_readable() racy, if the value of sk->sk_prot is reloaded after the initial check. Which in turn may lead to a null pointer dereference. Ensure the function pointer does not turn NULL after the check.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

4.70

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.17 (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)	6.6.94 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.34 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.15.3 (excluding)
cpe:2.3:o:linux:linux_kernel:6.16:rc1::::::
cpe:2.3:o:debian:debian_linux:11.0:::::::*

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

CVE-2025-38112

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools