What is CVE-2025-39934?

CVE-2025-39934 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 5.11 onward and patched in 5.15.194, 6.1.154, 6.6.108 and others. CVE-2025-39934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-39934?

CVE-2025-39934 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-39934?

Yes, CVE-2025-39934 has been patched. Fixed versions include 5.15.194, 6.1.154, 6.6.108 and others. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-39934 actively exploited?

CVE-2025-39934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2025-39934

Medium

In the Linux kernel, the following vulnerability has been resolved: drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ If the interrupt occurs before resource initialization is complete, the interrupt handler/worker may access uninitialized data such as the I2C tcpc_client device, potentially leading to NULL pointer dereference.

Package Linux Kernel

Published 2025-10-04

Last modified 2026-01-23

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-476

CVE-2025-39934 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.11 and later are affected. Fixed in 5.15.194, 6.1.154, 6.6.108, 6.12.49, 6.16.9, 6.17 and their respective stable series.

Affected from

≥ 5.11

Fixed in

✓ 5.15.194 5.15.x ✓ 6.1.154 6.1.x ✓ 6.6.108 6.6.x ✓ 6.12.49 6.12.x ✓ 6.16.9 6.16.x ✓ 6.17

References

6 total

Kernel Git
https://git.kernel.org/stable/c/0da73f7827691a5e2265b110d5fe12f29535ec92

Patch
Kernel Git
https://git.kernel.org/stable/c/15a77e1ab0a994d69b471c76b8d01117128dda26

Patch
Kernel Git
https://git.kernel.org/stable/c/1a7ea294d57fb61485d11b3f2241d631d73025cb

Patch
Kernel Git
https://git.kernel.org/stable/c/51a501e990a353a4f15da6bab295b28e5d118f64

Patch
Kernel Git
https://git.kernel.org/stable/c/a10f910c77f280327b481e77eab909934ec508f0

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2025-39934

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-04

Modified 2026-01-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-39934?

CVE-2025-39934 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 5.11 onward and has been patched in 5.15.194, 6.1.154, 6.6.108 and others. CVE-2025-39934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-39934?

CVE-2025-39934 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-39934?

Yes. CVE-2025-39934 has been patched. Fixed versions include 5.15.194, 6.1.154, 6.6.108 and others. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-39934 actively exploited?

No. CVE-2025-39934 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.