PT-2026-28637 · Canonical+4 · Qemu+24

Published 2026-01-01 · Updated 2026-06-12 · CVE-2026-3842

OSV

It was discovered that the LSI53C895A SCSI Host Bus Adapter implementation of QEMU incorrectly handled memory. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-6519)

It was discovered that QEMU could be made to read out of bounds when reading VMDK images. If a user or an automated system were tricked into opening a specially crafted VMDK image, an attacker could possibly use this issue to leak sensitive informaton or cause QEMU to crash, resulting in a denial of service. (CVE-2026-2243)

It was discovered that the virtio-snd device implementation of QEMU could be made to write out of bounds. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-3195)

It was discovered that the virtio-snd device implementation of QEMU contained an arithmetic overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-3196)

It was discovered that the Hyper-V Synthetic Debugging device implementation of QEMU could me made to write out of bounds. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-3842)

Related Identifiers

CVE-2026-3842

ECHO-334B-1C04-AA69

SUSE-SU-2026:2385-1

SUSE-SU-2026:2386-1

SUSE-SU-2026:2388-1

USN-8161-1

Affected Products

Qemu

Qemu-Block-Extra

Qemu-Block-Supplemental

Qemu Guest Agent

Qemu-Linux-User

Qemu-System

Qemu-System-Arm

Qemu-System-Common

Qemu-System-Data

Qemu-System-Gui

Qemu-System-Mips

Qemu-System-Misc

Qemu-System-Modules-Opengl

Qemu-System-Modules-Spice

Qemu-System-Ppc

Qemu-System-S390X

Qemu-System-Sparc

Qemu-System-X86

Qemu-System-X86-Microvm

Qemu-System-X86-Xen

Qemu-System-Xen

Qemu-User

Qemu-User-Binfmt

Qemu-User-Static

Qemu-Utils

References · 32

• https://ubuntu.com/security/CVE-2026-3196 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-3842 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:2388-1 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-3842 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8161-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:2386-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-6519 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-2243 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-3842 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:2385-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-3842 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-3842 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-3195 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-3842 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8161-1 · Vendor Advisory