What is CVE-2025-39729?

CVE-2025-39729 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Access of Uninitialized Pointer flaw (CWE-824), affecting Linux kernel versions from 6.16 onward and patched in 6.16.1 and 6.17. CVE-2025-39729 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-39729?

CVE-2025-39729 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-2025-39729?

Yes, CVE-2025-39729 has been patched. Fixed versions include 6.16.1 and 6.17. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-39729 actively exploited?

CVE-2025-39729 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Access of Uninitialized Pointer (CWE-824)?

The product accesses or uses a pointer that has not been initialised, leading to undefined behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/824.html

CVE-2025-39729

Medium

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix dereferencing uninitialized error pointer Fix below smatch warnings: drivers/crypto/ccp/sev-dev.c:1312 __sev_platform_init_locked() error: we previously assumed 'error' could be null

Package Linux Kernel

Published 2025-09-07

Last modified 2025-11-25

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-824

CVE-2025-39729 is a Access of Uninitialized Pointer vulnerability

What is Access of Uninitialized Pointer?

The product accesses or uses a pointer that has not been initialised, leading to undefined behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.16 and later are affected. Fixed in 6.16.1, 6.17 and their respective stable series.

Affected from

≥ 6.16

Fixed in

✓ 6.16.1 6.16.x ✓ 6.17

References

The following references provide additional information about CVE-2025-39729 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/0fa766726c091ff0ec7d26874f6e4724d23ecb0e
Patch
Kernel patch commit
https://git.kernel.org/stable/c/841634e1fdc2bdf35ab851fc279fd3bedcdf5e93
Patch

Details

CVE ID CVE-2025-39729

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-07

Modified 2025-11-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-39729?

CVE-2025-39729 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Access of Uninitialized Pointer flaw (CWE-824) . It affects Linux kernel versions from 6.16 onward and has been patched in 6.16.1 and 6.17. CVE-2025-39729 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-39729?

CVE-2025-39729 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-2025-39729?

Yes — CVE-2025-39729 has been patched. Fixed versions include 6.16.1 and 6.17. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-39729 actively exploited?

No — CVE-2025-39729 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Access of Uninitialized Pointer (CWE-824)?

The product accesses or uses a pointer that has not been initialised, leading to undefined behaviour. View CWE-824 on MITRE CWE →