CVE-2021-47201

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Affected Systems

• linux•linux

  ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 926e8c83d4c1c2dac0026637eb0d492df876489e | ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 78638b47132244e3934dc5dc79f6372d5ce8e98c | ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 9ef6589cac9a8c47f5544ccdf4c498093733bb3f | ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 89f22f129696ab53cfbc608e0a2184d0fea46ac1 | 4.13

• linux•linux_kernel

  ≥ 4.13, < 5.4.162 | ≥ 5.5, < 5.10.82 | ≥ 5.11, < 5.15.5 | 5.16:rc1

References (4)

• https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e
• https://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c
• https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f
• https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1