What is CVE-2025-40014?

CVE-2025-40014 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.14 onward and patched in 6.14.2 and 6.15. CVE-2025-40014 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-40014?

CVE-2025-40014 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-2025-40014?

Yes, CVE-2025-40014 has been patched. Fixed versions include 6.14.2 and 6.15. If you are running Linux kernel 6.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-40014 actively exploited?

CVE-2025-40014 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-40014

High

In the Linux kernel, the following vulnerability has been resolved: objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq() If speed_hz < AMD_SPI_MIN_HZ, amd_set_spi_freq() iterates over the entire amd_spi_freq array without breaking out early, causing 'i' to go beyond the array bounds. Fix that by stopping the loop when it gets to the last entry, so the low speed_hz value gets clamped up to AMD_SPI_MIN_HZ. Fixes the following warning with an UBSAN kernel: drivers/spi/spi-amd.o: error: objtool: amd_set_spi_freq() falls through to next function amd_spi_set_opcode()

Package Linux Kernel

Published 2025-04-18

Last modified 2025-10-30

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-129

CVE-2025-40014 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.14 and later are affected. Fixed in 6.14.2, 6.15 and their respective stable series.

Affected from

≥ 6.14

Fixed in

✓ 6.14.2 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-40014 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/76e51db43fe4aaaebcc5ddda67b0807f7c9bdecc
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7f2c746e09a3746bf937bc708129dc8af61d8f19
Patch

Details

CVE ID CVE-2025-40014

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-04-18

Modified 2025-10-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-40014?

CVE-2025-40014 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.14 onward and has been patched in 6.14.2 and 6.15. CVE-2025-40014 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-40014?

CVE-2025-40014 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-2025-40014?

Yes — CVE-2025-40014 has been patched. Fixed versions include 6.14.2 and 6.15. If you are running Linux kernel 6.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-40014 actively exploited?

No — CVE-2025-40014 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.