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Ubuntu: (CVE-2021-47201): linux vulnerability

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Ubuntu: (CVE-2021-47201): linux vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/10/2024
Created
11/21/2024
Added
11/19/2024
Modified
02/11/2025

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.

Solution(s)

  • ubuntu-upgrade-linux
  • ubuntu-upgrade-linux-aws
  • ubuntu-upgrade-linux-aws-5-4
  • ubuntu-upgrade-linux-aws-fips
  • ubuntu-upgrade-linux-azure
  • ubuntu-upgrade-linux-azure-5-4
  • ubuntu-upgrade-linux-azure-fips
  • ubuntu-upgrade-linux-bluefield
  • ubuntu-upgrade-linux-fips
  • ubuntu-upgrade-linux-gcp
  • ubuntu-upgrade-linux-gcp-5-4
  • ubuntu-upgrade-linux-gcp-fips
  • ubuntu-upgrade-linux-gkeop
  • ubuntu-upgrade-linux-hwe-5-4
  • ubuntu-upgrade-linux-ibm
  • ubuntu-upgrade-linux-ibm-5-4
  • ubuntu-upgrade-linux-kvm
  • ubuntu-upgrade-linux-oracle
  • ubuntu-upgrade-linux-oracle-5-4
  • ubuntu-upgrade-linux-raspi
  • ubuntu-upgrade-linux-raspi-5-4

References

  • https://attackerkb.com/topics/cve-2021-47201
  • CVE - 2021-47201
  • https://git.kernel.org/linus/89f22f129696ab53cfbc608e0a2184d0fea46ac1
  • https://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c
  • https://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1
  • https://git.kernel.org/stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e
  • https://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f
  • https://www.cve.org/CVERecord?id=CVE-2021-47201
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