What is CVE-2024-40940?

CVE-2024-40940 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.19 onward and patched in 6.1.95, 6.6.35, 6.9.6 and others. CVE-2024-40940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40940?

CVE-2024-40940 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-2024-40940?

Yes, CVE-2024-40940 has been patched. Fixed versions include 6.1.95, 6.6.35, 6.9.6 and others. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-40940 actively exploited?

CVE-2024-40940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-40940

High

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix tainted pointer delete is case of flow rules creation fail In case of flow rule creation fail in mlx5_lag_create_port_sel_table(), instead of previously created rules, the tainted pointer is deleted deveral times. Fix this bug by using correct flow rules pointers. Found by Linux Verification Center (linuxtesting.org) with SVACE.

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-415

CVE-2024-40940 is classified as CWE-415

See CWE-415 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.19 and later are affected. Fixed in 6.1.95, 6.6.35, 6.9.6, 6.10 and their respective stable series.

Affected from

≥ 5.19

Fixed in

✓ 6.1.95 6.1.x ✓ 6.6.35 6.6.x ✓ 6.9.6 6.9.x ✓ 6.10

References

5 total

Kernel Git
https://git.kernel.org/stable/c/229bedbf62b13af5aba6525ad10b62ad38d9ccb5

Patch
Kernel Git
https://git.kernel.org/stable/c/531eab2da27dd42d68dfb841d82e987f4a6738b8

Patch
Kernel Git
https://git.kernel.org/stable/c/a03a3fa12769e25f4385bee587afe1445aee7f7a

Patch
Kernel Git
https://git.kernel.org/stable/c/d857df86837ac1c30592e8a068204d16feac9930

Patch
Debian Security
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Details

CVE ID CVE-2024-40940

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-2024-40940?

CVE-2024-40940 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.19 onward and has been patched in 6.1.95, 6.6.35, 6.9.6 and others. CVE-2024-40940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40940?

CVE-2024-40940 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-2024-40940?

Yes. CVE-2024-40940 has been patched. Fixed versions include 6.1.95, 6.6.35, 6.9.6 and others. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-40940 actively exploited?

No. CVE-2024-40940 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.