USN-5082-1

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Source
https://ubuntu.com/security/notices/USN-5082-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5082-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5082-1
Related
Published
2021-09-16T16:49:22.470154Z
Modified
2021-09-16T16:49:22.470154Z
Summary
linux-oem-5.13 vulnerabilities
Details

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)

Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. (CVE-2021-3609)

References

Affected packages

Ubuntu:20.04:LTS / linux-oem-5.13

Package

Name
linux-oem-5.13
Purl
pkg:deb/ubuntu/linux-oem-5.13?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.13.0-1012.16

Affected versions

5.*

5.13.0-1009.10
5.13.0-1010.11

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-buildinfo-5.13.0-1012-oem"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-headers-5.13.0-1012-oem"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-image-unsigned-5.13.0-1012-oem"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-image-unsigned-5.13.0-1012-oem-dbgsym"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-modules-5.13.0-1012-oem"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-oem-5.13-headers-5.13.0-1012"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-oem-5.13-tools-5.13.0-1012"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-oem-5.13-tools-host"
        },
        {
            "binary_version": "5.13.0-1012.16",
            "binary_name": "linux-tools-5.13.0-1012-oem"
        }
    ]
}