CVE-2024-40938
landlock: Fix d_parent walk
Description
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]
INFO
Published Date :
July 12, 2024, 1:15 p.m.
Last Modified :
Nov. 3, 2025, 10:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel packages.
- Reboot the system after the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-40938.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-40938 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-40938
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-40938 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-40938 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html -
Initial Analysis by [email protected]
Oct. 06, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.9.6 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.35 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.19 up to (excluding) 6.1.95 Added Reference Type CVE: https://git.kernel.org/stable/c/88da52ccd66e65f2e63a6c35c9dff55d448ef4dc Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/88da52ccd66e65f2e63a6c35c9dff55d448ef4dc Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/b6e5e696435832b33e40775f060ef5c95f4fda1f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b6e5e696435832b33e40775f060ef5c95f4fda1f Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/c7618c7b0b8c45bcef34410cc1d1e953eb17f8f6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c7618c7b0b8c45bcef34410cc1d1e953eb17f8f6 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/cc30d05b34f9a087a6928d09b131f7b491e9ab11 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cc30d05b34f9a087a6928d09b131f7b491e9ab11 Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/88da52ccd66e65f2e63a6c35c9dff55d448ef4dc Added Reference https://git.kernel.org/stable/c/b6e5e696435832b33e40775f060ef5c95f4fda1f Added Reference https://git.kernel.org/stable/c/c7618c7b0b8c45bcef34410cc1d1e953eb17f8f6 Added Reference https://git.kernel.org/stable/c/cc30d05b34f9a087a6928d09b131f7b491e9ab11 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 12, 2024
Action Type Old Value New Value Added Description 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] Added Reference kernel.org https://git.kernel.org/stable/c/b6e5e696435832b33e40775f060ef5c95f4fda1f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/cc30d05b34f9a087a6928d09b131f7b491e9ab11 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c7618c7b0b8c45bcef34410cc1d1e953eb17f8f6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/88da52ccd66e65f2e63a6c35c9dff55d448ef4dc [No types assigned]