CVE-2021-47201
iavf: free q_vectors before queues in iavf_disable_vf
Description
In the Linux kernel, the following vulnerability has been resolved: iavf: free q_vectors before queues in iavf_disable_vf iavf_free_queues() clears adapter->num_active_queues, which iavf_free_q_vectors() relies on, so swap the order of these two function calls in iavf_disable_vf(). This resolves a panic encountered when the interface is disabled and then later brought up again after PF communication is restored.
INFO
Published Date :
April 10, 2024, 7:15 p.m.
Last Modified :
March 27, 2025, 9:15 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 Linux kernel packages.
- Reboot the system to apply 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-2021-47201.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47201 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-2021-47201
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-2021-47201 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47201 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. 27, 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:5.16:rc1:*:*:*:*:*:* *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:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.13 up to (excluding) 5.4.162 Added Reference Type CVE: https://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f 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/78638b47132244e3934dc5dc79f6372d5ce8e98c Added Reference https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1 Added Reference https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e Added Reference https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f -
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: iavf: free q_vectors before queues in iavf_disable_vf iavf_free_queues() clears adapter->num_active_queues, which iavf_free_q_vectors() relies on, so swap the order of these two function calls in iavf_disable_vf(). This resolves a panic encountered when the interface is disabled and then later brought up again after PF communication is restored. Added Reference kernel.org https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1 [No types assigned]