What is CVE-2024-40994?

CVE-2024-40994 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Integer Overflow flaw (CWE-190), affecting Linux kernel versions from 5.14 onward and patched in 5.15.162, 6.1.96, 6.6.36 and others. CVE-2024-40994 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40994?

CVE-2024-40994 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-2024-40994?

Yes, CVE-2024-40994 has been patched. Fixed versions include 5.15.162, 6.1.96, 6.6.36 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-40994 actively exploited?

CVE-2024-40994 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Integer Overflow (CWE-190)?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/190.html

CVE-2024-40994

High

In the Linux kernel, the following vulnerability has been resolved: ptp: fix integer overflow in max_vclocks_store On 32bit systems, the "4 * max" multiply can overflow. Use kcalloc() to do the allocation to prevent this.

Package Linux Kernel

Published 2024-07-12

Last modified 2025-11-03

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-190

CVE-2024-40994 is a Integer Overflow vulnerability

What is Integer Overflow?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.14 and later are affected. Fixed in 5.15.162, 6.1.96, 6.6.36, 6.9.7, 6.10 and their respective stable series.

Affected from

≥ 5.14

Fixed in

✓ 5.15.162 5.15.x ✓ 6.1.96 6.1.x ✓ 6.6.36 6.6.x ✓ 6.9.7 6.9.x ✓ 6.10

References

6 total

Kernel Git
https://git.kernel.org/stable/c/4b03da87d0b7074c93d9662c6e1a8939f9b8b86e

Patch
Kernel Git
https://git.kernel.org/stable/c/666e934d749e50a37f3796caaf843a605f115b6f

Patch
Kernel Git
https://git.kernel.org/stable/c/81d23d2a24012e448f651e007fac2cfd20a45ce0

Patch
Kernel Git
https://git.kernel.org/stable/c/d50d62d5e6ee6aa03c00bddb91745d0b632d3b0f

Patch
Kernel Git
https://git.kernel.org/stable/c/e1fccfb4638ee6188377867f6015d0ce35764a8e

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2024-40994

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-07-12

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-40994?

CVE-2024-40994 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Integer Overflow flaw (CWE-190) . It affects Linux kernel versions from 5.14 onward and has been patched in 5.15.162, 6.1.96, 6.6.36 and others. CVE-2024-40994 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40994?

CVE-2024-40994 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-2024-40994?

Yes. CVE-2024-40994 has been patched. Fixed versions include 5.15.162, 6.1.96, 6.6.36 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-40994 actively exploited?

No. CVE-2024-40994 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.