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CVE-2021-47201
iavf: free q_vectors before queues in iavf_disable_vf
High7.8EPSS 0.25%
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 65c7006f234c9ede887d468f595f259a5c5cc552 – < 926e8c83d4c1c2dac0026637eb0d492df876489e
- affected 65c7006f234c9ede887d468f595f259a5c5cc552 – < 78638b47132244e3934dc5dc79f6372d5ce8e98c
- affected 65c7006f234c9ede887d468f595f259a5c5cc552 – < 9ef6589cac9a8c47f5544ccdf4c498093733bb3f
- affected 65c7006f234c9ede887d468f595f259a5c5cc552 – < 89f22f129696ab53cfbc608e0a2184d0fea46ac1
- affected 4.13
- unaffected < 4.13
- unaffected 5.4.162 – ≤ 5.4.*
- unaffected 5.10.82 – ≤ 5.10.*
- unaffected 5.15.5 – ≤ 5.15.*
- unaffected 5.16 – ≤ *
References (4)
- https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2021-47201)Record last updated .