USN-5489-1: QEMU vulnerabilities
Alexander Bulekov discovered that QEMU incorrectly handled floppy disk emulation. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak sensitive information. (CVE-2021-3507) It was discovered that QEMU incorrectly handled NVME controller emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 22.04 LTS. (CVE-2021-3929) It was discovered that QEMU incorrectly handled QXL display device emulation. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-4206, CVE-2021-4207) Jietao Xiao, Jinku Li, Wenbo Shen, and Nanzi Yang discovered that QEMU incorrectly handled the virtiofsd shared file system daemon. An attacker inside the guest could use this issue to create files with incorrect ownership, possibly leading to privilege escalation. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-0358) It was discovered that QEMU incorrectly handled virtio-net devices. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2022-26353) It was discovered that QEMU incorrectly handled vhost-vsock devices. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2022-26354)
Affected Software
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
What is the severity of USN-5489-1?
USN-5489-1 is classified as a high severity vulnerability affecting QEMU due to improper handling of floppy disk emulation which can cause denial of service.
How do I fix USN-5489-1?
To fix USN-5489-1, update your QEMU packages to the specified versions: 1:6.2+dfsg-2ubuntu6.2 or later on Ubuntu 22.04.
Who is affected by USN-5489-1?
USN-5489-1 affects users of QEMU running on Ubuntu 22.04 and earlier versions.
What are the potential impacts of USN-5489-1?
The impacts of USN-5489-1 include potential denial of service and possible leakage of sensitive information for privileged attackers.
Is there any exploit for USN-5489-1?
While specific exploits are not detailed, the vulnerability allows a privileged attacker within the guest to crash QEMU or access sensitive information.