CVE-2021-47654
Linux Kernel Landlock Memory Leak Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: samples/landlock: Fix path_list memory leak Clang static analysis reports this error sandboxer.c:134:8: warning: Potential leak of memory pointed to by 'path_list' ret = 0; ^ path_list is allocated in parse_path() but never freed.
INFO
Published Date :
Feb. 26, 2025, 6:37 a.m.
Last Modified :
March 18, 2025, 6:49 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
- Ensure proper memory management in path_list allocation.
- Free memory pointed to by path_list in parse_path().
- Review and test kernel module changes thoroughly.
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-2021-47654.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47654 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-2021-47654
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-2021-47654 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47654 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.
-
Initial Analysis by [email protected]
Mar. 18, 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 CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 5.17.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.15.33 Added Reference Type kernel.org: https://git.kernel.org/stable/c/017196730299ccd6eed24bbfabed8af4ffd81530 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/20fbf100f84b9aeb9c91421abe1927bc152bc32b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/49b0d8bf05809df5f87e5c03e26d74bdfdab4571 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/66b513b7c64a7290c1fbb88e657f7cece992e131 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: samples/landlock: Fix path_list memory leak Clang static analysis reports this error sandboxer.c:134:8: warning: Potential leak of memory pointed to by 'path_list' ret = 0; ^ path_list is allocated in parse_path() but never freed. Added Reference https://git.kernel.org/stable/c/017196730299ccd6eed24bbfabed8af4ffd81530 Added Reference https://git.kernel.org/stable/c/20fbf100f84b9aeb9c91421abe1927bc152bc32b Added Reference https://git.kernel.org/stable/c/49b0d8bf05809df5f87e5c03e26d74bdfdab4571 Added Reference https://git.kernel.org/stable/c/66b513b7c64a7290c1fbb88e657f7cece992e131