Affected: QEMU

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.

Affected: Ubuntu:Pro:14.04:LTS: qemu, Ubuntu:Pro:16.04:LTS: qemu, Ubuntu:Pro:18.04:LTS: qemu, Ubuntu:20.04:LTS: qemu, Ubuntu:22.04:LTS: qemu

It was discovered that QEMU did not properly manage the guest drivers when shared buffers are not allocated. A malicious guest driver 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 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-1050)

It was discovered that QEMU did not properly check the size of the structure pointed to by the guest physical address pqxl. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-4144)

It was discovered that QEMU did not properly manage memory in the ACPI Error Record Serialization Table (ERST) device. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 22.10. (CVE-2022-4172)

It was discovered that QEMU did not properly manage memory when DMA memory writes happen repeatedly in the lsi53c895a device. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2023-0330)