Answer in brief
CVE-2021-47201 records a High severity (CVSS 7.8) vulnerability in iavf: free q_vectors before queues in iavf_disable_vf. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=65c7006f234c9ede887d468f595f259a5c5cc552 <926e8c83d4c1c2dac0026637eb0d492df876489e || >=65c7006f234c9ede887d468f595f259a5c5cc552 <78638b47132244e3934dc5dc79f6372d5ce8e98c || >=65c7006f234c9ede887d468f595f259a5c5cc552 <9ef6589cac9a8c47f5544ccdf4c498093733bb3f || >=65c7006f234c9ede887d468f595f259a5c5cc552 <89f22f129696ab53cfbc608e0a2184d0fea46ac1 | 926e8c83d4c1c2dac0026637eb0d492df876489e, 78638b47132244e3934dc5dc79f6372d5ce8e98c, 9ef6589cac9a8c47f5544ccdf4c498093733bb3f, 89f22f129696ab53cfbc608e0a2184d0fea46ac1 |
| Linux/Linuxgeneric | 4.13 | Not reported |
Published upstream
Apr 10, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47201 records a High severity (CVSS 7.8) vulnerability in iavf: free q_vectors before queues in iavf_disable_vf. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=65c7006f234c9ede887d468f595f259a5c5cc552 <926e8c83d4c1c2dac0026637eb0d492df876489e || >=65c7006f234c9ede887d468f595f259a5c5cc552 <78638b47132244e3934dc5dc79f6372d5ce8e98c || >=65c7006f234c9ede887d468f595f259a5c5cc552 <9ef6589cac9a8c47f5544ccdf4c498093733bb3f || >=65c7006f234c9ede887d468f595f259a5c5cc552 <89f22f129696ab53cfbc608e0a2184d0fea46ac1 | 926e8c83d4c1c2dac0026637eb0d492df876489e, 78638b47132244e3934dc5dc79f6372d5ce8e98c, 9ef6589cac9a8c47f5544ccdf4c498093733bb3f, 89f22f129696ab53cfbc608e0a2184d0fea46ac1 |
| Linux/Linuxgeneric | 4.13 | Not reported |
Published upstream
Apr 10, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.