What is CVE-2025-38653?

CVE-2025-38653 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.0 onward and patched in 6.1.148, 6.6.102, 6.12.42 and others. CVE-2025-38653 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38653?

CVE-2025-38653 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-38653?

Yes, CVE-2025-38653 has been patched. Fixed versions include 6.1.148, 6.6.102, 6.12.42 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38653 actively exploited?

CVE-2025-38653 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2025-38653

High

In the Linux kernel, the following vulnerability has been resolved: proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al Check pde->proc_ops->proc_lseek directly may cause UAF in rmmod scenario. It's a gap in proc_reg_open() after commit 654b33ada4ab("proc: fix UAF in proc_get_inode()"). Followed by AI Viro's suggestion, fix it in same manner.

Package Linux Kernel

Published 2025-08-22

Last modified 2026-01-07

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2025-38653 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.0 and later are affected. Fixed in 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17 and their respective stable series.

Affected from

≥ 6.0

Fixed in

✓ 6.1.148 6.1.x ✓ 6.6.102 6.6.x ✓ 6.12.42 6.12.x ✓ 6.15.10 6.15.x ✓ 6.16.1 6.16.x ✓ 6.17

References

7 total

Kernel Git
https://git.kernel.org/stable/c/1fccbfbae1dd36198dc47feac696563244ad81d3

Patch
Kernel Git
https://git.kernel.org/stable/c/33c778ea0bd0fa62ff590497e72562ff90f82b13

Patch
Kernel Git
https://git.kernel.org/stable/c/c35b0feb80b48720dfbbf4e33759c7be3faaebb6

Patch
Kernel Git
https://git.kernel.org/stable/c/d136502e04d8853a9aecb335d07bbefd7a1519a8

Patch
Kernel Git
https://git.kernel.org/stable/c/fc1072d934f687e1221d685cf1a49a5068318f34

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2025-38653

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-08-22

Modified 2026-01-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38653?

CVE-2025-38653 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.0 onward and has been patched in 6.1.148, 6.6.102, 6.12.42 and others. CVE-2025-38653 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38653?

CVE-2025-38653 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-38653?

Yes. CVE-2025-38653 has been patched. Fixed versions include 6.1.148, 6.6.102, 6.12.42 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38653 actively exploited?

No. CVE-2025-38653 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.