USN-5071-1: Linux kernel vulnerabilities
First published: Wed Sep 08 2021(Updated: )
Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM to disable restrictions on VMLOAD/VMSAVE in a nested guest. An attacker in a guest VM could use this to read or write portions of the host's physical memory. (CVE-2021-3656) Maxim Levitsky discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not properly prevent a guest VM from enabling AVIC in nested guest VMs. An attacker in a guest VM could use this to write to portions of the host's physical memory. (CVE-2021-3653) It was discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not ensure enough processing time was given to perform cleanups of large SEV VMs. A local attacker could use this to cause a denial of service (soft lockup). (CVE-2020-36311) It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. An attacker who could start and control a VM could possibly use this to expose sensitive information or execute arbitrary code. (CVE-2021-22543) Murray McAllister discovered that the joystick device interface in the Linux kernel did not properly validate data passed via an ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code on systems with a joystick device registered. (CVE-2021-3612)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-5.4.0-1052-gke | <5.4.0-1052.55 | 5.4.0-1052.55 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-84-generic-lpae | <5.4.0-84.94 | 5.4.0-84.94 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1052-gcp | <5.4.0-1052.56 | 5.4.0-1052.56 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-gkeop | <5.4.0.1023.26 | 5.4.0.1023.26 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-virtual | <5.4.0.84.88 | 5.4.0.84.88 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-generic | <5.4.0.84.88 | 5.4.0.84.88 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-84-generic | <5.4.0-84.94 | 5.4.0-84.94 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1023-gkeop | <5.4.0-1023.24 | 5.4.0-1023.24 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-oem-osp1 | <5.4.0.84.88 | 5.4.0.84.88 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1046-kvm | <5.4.0-1046.48 | 5.4.0-1046.48 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-azure-lts-20.04 | <5.4.0.1058.56 | 5.4.0.1058.56 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1058-azure | <5.4.0-1058.60 | 5.4.0-1058.60 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-gkeop-5.4 | <5.4.0.1023.26 | 5.4.0.1023.26 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1054-oracle | <5.4.0-1054.58 | 5.4.0-1054.58 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-gcp-lts-20.04 | <5.4.0.1052.62 | 5.4.0.1052.62 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-aws-lts-20.04 | <5.4.0.1056.59 | 5.4.0.1056.59 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1056-aws | <5.4.0-1056.59 | 5.4.0-1056.59 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-84-lowlatency | <5.4.0-84.94 | 5.4.0-84.94 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-gke | <5.4.0.1052.62 | 5.4.0.1052.62 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-oracle-lts-20.04 | <5.4.0.1054.54 | 5.4.0.1054.54 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-gke-5.4 | <5.4.0.1052.62 | 5.4.0.1052.62 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-kvm | <5.4.0.1046.45 | 5.4.0.1046.45 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-oem | <5.4.0.84.88 | 5.4.0.84.88 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-generic-lpae | <5.4.0.84.88 | 5.4.0.84.88 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-lowlatency | <5.4.0.84.88 | 5.4.0.84.88 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1052-gke | <5.4.0-1052.55~18.04.1 | 5.4.0-1052.55~18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1052-gcp | <5.4.0-1052.56~18.04.1 | 5.4.0-1052.56~18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1023-gkeop | <5.4.0-1023.24~18.04.1 | 5.4.0-1023.24~18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-aws | <5.4.0.1056.39 | 5.4.0.1056.39 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1058-azure | <5.4.0-1058.60~18.04.1 | 5.4.0-1058.60~18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-gkeop-5.4 | <5.4.0.1023.24~18.04.24 | 5.4.0.1023.24~18.04.24 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1054-oracle | <5.4.0-1054.58~18.04.1 | 5.4.0-1054.58~18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-azure | <5.4.0.1058.38 | 5.4.0.1058.38 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-5.4.0-1056-aws | <5.4.0-1056.59~18.04.1 | 5.4.0-1056.59~18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-gcp | <5.4.0.1052.38 | 5.4.0.1052.38 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-oracle | <5.4.0.1054.58~18.04.34 | 5.4.0.1054.58~18.04.34 |
| =18.04 | ||
| All of | ||
| ubuntu/linux-image-gke-5.4 | <5.4.0.1052.55~18.04.17 | 5.4.0.1052.55~18.04.17 |
| =18.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2020-36311
- https://ubuntu.com/security/CVE-2021-22543
- https://ubuntu.com/security/CVE-2021-3653
- https://ubuntu.com/security/CVE-2021-3612
- https://ubuntu.com/security/CVE-2021-3656
- https://ubuntu.com/security/notices/USN-5071-2
- https://ubuntu.com/security/notices/USN-5120-1
- https://ubuntu.com/security/notices/USN-5070-1
- https://ubuntu.com/security/notices/USN-5071-3
- https://ubuntu.com/security/notices/USN-5094-1
- https://ubuntu.com/security/notices/USN-5094-2
- https://ubuntu.com/security/notices/USN-5106-1
- https://ubuntu.com/security/notices/USN-5062-1
- https://ubuntu.com/security/notices/USN-5072-1
- https://ubuntu.com/security/notices/USN-5073-1
- https://ubuntu.com/security/notices/LSN-0081-1
- https://ubuntu.com/security/notices/USN-5082-1
- https://ubuntu.com/security/notices/USN-5073-2
- https://ubuntu.com/security/notices/LSN-0083-1
- https://ubuntu.com/security/notices/USN-5073-3
- https://ubuntu.com/security/notices/USN-5096-1
- https://ubuntu.com/security/notices/USN-5299-1
- https://ubuntu.com/security/notices/USN-5343-1
- https://launchpad.net/ubuntu/+source/linux-signed-gke/5.4.0-1052.55
- https://launchpad.net/ubuntu/+source/linux/5.4.0-84.94
- https://launchpad.net/ubuntu/+source/linux-signed-gcp/5.4.0-1052.56
- https://launchpad.net/ubuntu/+source/linux-meta-gkeop/5.4.0.1023.26
- https://launchpad.net/ubuntu/+source/linux-meta/5.4.0.84.88
- https://launchpad.net/ubuntu/+source/linux-signed/5.4.0-84.94
- https://launchpad.net/ubuntu/+source/linux-signed-gkeop/5.4.0-1023.24
- https://launchpad.net/ubuntu/+source/linux-signed-kvm/5.4.0-1046.48
- https://launchpad.net/ubuntu/+source/linux-meta-azure/5.4.0.1058.56
- https://launchpad.net/ubuntu/+source/linux-signed-azure/5.4.0-1058.60
- https://launchpad.net/ubuntu/+source/linux-signed-oracle/5.4.0-1054.58
- https://launchpad.net/ubuntu/+source/linux-meta-gcp/5.4.0.1052.62
- https://launchpad.net/ubuntu/+source/linux-meta-aws/5.4.0.1056.59
- https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1056.59
- https://launchpad.net/ubuntu/+source/linux-meta-gke/5.4.0.1052.62
- https://launchpad.net/ubuntu/+source/linux-meta-oracle/5.4.0.1054.54
- https://launchpad.net/ubuntu/+source/linux-meta-kvm/5.4.0.1046.45
- https://launchpad.net/ubuntu/+source/linux-signed-gke-5.4/5.4.0-1052.55~18.04.1
- https://launchpad.net/ubuntu/+source/linux-signed-gcp-5.4/5.4.0-1052.56~18.04.1
- https://launchpad.net/ubuntu/+source/linux-signed-gkeop-5.4/5.4.0-1023.24~18.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-aws-5.4/5.4.0.1056.39
- https://launchpad.net/ubuntu/+source/linux-signed-azure-5.4/5.4.0-1058.60~18.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-gkeop-5.4/5.4.0.1023.24~18.04.24
- https://launchpad.net/ubuntu/+source/linux-signed-oracle-5.4/5.4.0-1054.58~18.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-azure-5.4/5.4.0.1058.38
- https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1056.59~18.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-gcp-5.4/5.4.0.1052.38
- https://launchpad.net/ubuntu/+source/linux-meta-oracle-5.4/5.4.0.1054.58~18.04.34
- https://launchpad.net/ubuntu/+source/linux-meta-gke-5.4/5.4.0.1052.55~18.04.17
- https://ubuntu.com/security/notices/USN-5071-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
- agent/description
- agent/event
- agent/first-publish-date
- agent/last-modified-date
- agent/references
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/title
- agent/type
- agent/weakness
- collector/usn
- source/Ubuntu
- anchor-related/USN-5071-2
- anchor-related/USN-5120-1
- anchor-related/USN-5070-1
- anchor-related/USN-5071-3
- anchor-related/USN-5094-1
- anchor-related/USN-5094-2
- anchor-related/USN-5106-1
- anchor-related/USN-5062-1
- anchor-related/USN-5072-1
- anchor-related/USN-5073-1
- anchor-related/USN-5082-1
- anchor-related/USN-5073-2
- anchor-related/USN-5073-3
- anchor-related/USN-5096-1
- anchor-related/USN-5299-1
- anchor-related/USN-5343-1
- agent/software-canonical-lookup
- package-manager/ubuntu
- vendor/ubuntu
- canonical/ubuntu ubuntu
- version/ubuntu ubuntu/20.04
- version/ubuntu ubuntu/18.04