5.5
MEDIUM CVSS 3.1
CVE-2021-47184
Intel i40e NULL Pointer Dereference
Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.

INFO

Published Date :

April 10, 2024, 7:15 p.m.

Last Modified :

Jan. 14, 2025, 4:41 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2021-47184 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Update the Linux kernel to address a NULL pointer dereference vulnerability.
  • Update the affected Linux kernel packages.
  • Reboot the system to apply the changes.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-47184 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-2021-47184 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-2021-47184 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-47184 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]

    Jan. 14, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE NIST CWE-476
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.12 up to (excluding) 4.14.256 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.218 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.5 *cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
    Changed Reference Type https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6 No Types Assigned https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6 Patch
    Changed Reference Type https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6 No Types Assigned https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6 Patch
    Changed Reference Type https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089 No Types Assigned https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089 Patch
    Changed Reference Type https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089 No Types Assigned https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089 Patch
    Changed Reference Type https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d No Types Assigned https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d Patch
    Changed Reference Type https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d No Types Assigned https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d Patch
    Changed Reference Type https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c No Types Assigned https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c Patch
    Changed Reference Type https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c No Types Assigned https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c Patch
    Changed Reference Type https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890 No Types Assigned https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890 Patch
    Changed Reference Type https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890 No Types Assigned https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890 Patch
    Changed Reference Type https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178 No Types Assigned https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178 Patch
    Changed Reference Type https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178 No Types Assigned https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178 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/37d9e304acd903a445df8208b8a13d707902dea6
    Added Reference https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089
    Added Reference https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d
    Added Reference https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c
    Added Reference https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890
    Added Reference https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 28, 2024

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Apr. 10, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.
    Added Reference kernel.org https://git.kernel.org/stable/c/78f2a9e831f9610e3655a0be5e675e1aa2472089 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact