CVE-2021-47464
Linux Audit Null Pointer Dereference Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: audit: fix possible null-pointer dereference in audit_filter_rules Fix possible null-pointer dereference in audit_filter_rules. audit_filter_rules() error: we previously assumed 'ctx' could be null
INFO
Published Date :
May 22, 2024, 7:15 a.m.
Last Modified :
April 2, 2025, 3:11 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.4
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-2021-47464.
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-2021-47464 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47464 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.
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Initial Analysis by [email protected]
Apr. 02, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.3 up to (excluding) 5.4.156 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.76 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.14.15 Added Reference Type CVE: https://git.kernel.org/stable/c/16802fa4c33eb1a8efb23f1e93365190e4047d05 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/16802fa4c33eb1a8efb23f1e93365190e4047d05 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4e9e46a700201b4c85081fd478c99c692a9aaa0d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4e9e46a700201b4c85081fd478c99c692a9aaa0d Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/6e3ee990c90494561921c756481d0e2125d8b895 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6e3ee990c90494561921c756481d0e2125d8b895 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/d6f451f1f60c58d73038c7c3177066f8f084e2a2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d6f451f1f60c58d73038c7c3177066f8f084e2a2 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/16802fa4c33eb1a8efb23f1e93365190e4047d05 Added Reference https://git.kernel.org/stable/c/4e9e46a700201b4c85081fd478c99c692a9aaa0d Added Reference https://git.kernel.org/stable/c/6e3ee990c90494561921c756481d0e2125d8b895 Added Reference https://git.kernel.org/stable/c/d6f451f1f60c58d73038c7c3177066f8f084e2a2 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 03, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-476 Added CVSS V3.1 CISA-ADP AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 22, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: audit: fix possible null-pointer dereference in audit_filter_rules Fix possible null-pointer dereference in audit_filter_rules. audit_filter_rules() error: we previously assumed 'ctx' could be null Added Reference kernel.org https://git.kernel.org/stable/c/d6f451f1f60c58d73038c7c3177066f8f084e2a2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/16802fa4c33eb1a8efb23f1e93365190e4047d05 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4e9e46a700201b4c85081fd478c99c692a9aaa0d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6e3ee990c90494561921c756481d0e2125d8b895 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47464 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-2021-47464
weaknesses.