What is CVE-2025-39778?

CVE-2025-39778 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 6.11 onward and patched in 6.12.23, 6.13.11, 6.14.2 and others. CVE-2025-39778 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-39778?

CVE-2025-39778 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2025-39778?

Yes, CVE-2025-39778 has been patched. Fixed versions include 6.12.23, 6.13.11, 6.14.2 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-39778 actively exploited?

CVE-2025-39778 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2025-39778

High

In the Linux kernel, the following vulnerability has been resolved: objtool, nvmet: Fix out-of-bounds stack access in nvmet_ctrl_state_show() The csts_state_names[] array only has six sparse entries, but the iteration code in nvmet_ctrl_state_show() iterates seven, resulting in a potential out-of-bounds stack read. Fix that. Fixes the following warning with an UBSAN kernel: vmlinux.o: warning: objtool: .text.nvmet_ctrl_state_show: unexpected end of section

Package Linux Kernel

Published 2025-04-18

Last modified 2025-10-01

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2025-39778 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.11 and later are affected. Fixed in 6.12.23, 6.13.11, 6.14.2, 6.15 and their respective stable series.

Affected from

≥ 6.11

Fixed in

✓ 6.12.23 6.12.x ✓ 6.13.11 6.13.x ✓ 6.14.2 6.14.x ✓ 6.15

References

4 total

Kernel Git
https://git.kernel.org/stable/c/0cc0efc58d6c741b2868d4af24874d7fec28a575

Patch
Kernel Git
https://git.kernel.org/stable/c/107a23185d990e3df6638d9a84c835f963fe30a6

Patch
Kernel Git
https://git.kernel.org/stable/c/1adc93a525fdee8e2b311e6d5fd93eb69714ca05

Patch
Kernel Git
https://git.kernel.org/stable/c/8fbf37a3577b4d64c150cafde338eee17b2f2ea4

Patch

Details

CVE ID CVE-2025-39778

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2025-04-18

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-39778?

CVE-2025-39778 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 6.11 onward and has been patched in 6.12.23, 6.13.11, 6.14.2 and others. CVE-2025-39778 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-39778?

CVE-2025-39778 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2025-39778?

Yes. CVE-2025-39778 has been patched. Fixed versions include 6.12.23, 6.13.11, 6.14.2 and others. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-39778 actively exploited?

No. CVE-2025-39778 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.