What is CVE-2024-40938?

CVE-2024-40938 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 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-2024-40938 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40938?

CVE-2024-40938 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-40938?

Yes, CVE-2024-40938 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-2024-40938 actively exploited?

CVE-2024-40938 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-40938

Medium

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix d_parent walk The WARN_ON_ONCE() in collect_domain_accesses() can be triggered when trying to link a root mount point. This cannot work in practice because this directory is mounted, but the VFS check is done after the call to security_path_link(). Do not use source directory's d_parent when the source directory is the mount point. [mic: Fix commit message]

Package Linux Kernel

Published 2024-07-12

Last modified 2025-11-03

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

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/88da52ccd66e65f2e63a6c35c9dff55d448ef4dc

Patch
Kernel Git
https://git.kernel.org/stable/c/b6e5e696435832b33e40775f060ef5c95f4fda1f

Patch
Kernel Git
https://git.kernel.org/stable/c/c7618c7b0b8c45bcef34410cc1d1e953eb17f8f6

Patch
Kernel Git
https://git.kernel.org/stable/c/cc30d05b34f9a087a6928d09b131f7b491e9ab11

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

Details

CVE ID CVE-2024-40938

Severity Medium

CVSS score 5.5 / 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-2024-40938?

CVE-2024-40938 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 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-2024-40938 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40938?

CVE-2024-40938 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-40938?

Yes. CVE-2024-40938 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-2024-40938 actively exploited?

No. CVE-2024-40938 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.