CVE-2025-39846

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

19/09/2025

Last modified:

20/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved: pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region() In __iodyn_find_io_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There is a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource(). Fix this bug by adding a check of res.

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::::::::	2.6.35 (including)	5.4.299 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.243 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.192 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.151 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.105 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.46 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.16.6 (excluding)
cpe:2.3:o:linux:linux_kernel:6.17:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc4::::::
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-2025-39846

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools