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Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : QEMU vulnerabilities (USN-8161-1)

high Nessus Plugin ID 306091

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8161-1 advisory.

 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8161-1

Plugin Details

Severity: High

ID: 306091

File Name: ubuntu_USN-8161-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 4/13/2026

Updated: 4/13/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2026-2243

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2024-6519

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:qemu-system-riscv, p-cpe:/a:canonical:ubuntu_linux:qemu-system-mips, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qemu-system-common, p-cpe:/a:canonical:ubuntu_linux:qemu-system-modules-opengl, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qemu-user-binfmt, p-cpe:/a:canonical:ubuntu_linux:qemu-user, p-cpe:/a:canonical:ubuntu_linux:qemu-guest-agent, p-cpe:/a:canonical:ubuntu_linux:qemu-system-arm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-data, p-cpe:/a:canonical:ubuntu_linux:qemu-system-modules-spice, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86-microvm, p-cpe:/a:canonical:ubuntu_linux:qemu-system-gui, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:qemu-user-static, p-cpe:/a:canonical:ubuntu_linux:qemu-system-s390x, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86, p-cpe:/a:canonical:ubuntu_linux:qemu-system-misc, p-cpe:/a:canonical:ubuntu_linux:qemu-block-supplemental, p-cpe:/a:canonical:ubuntu_linux:qemu-utils, p-cpe:/a:canonical:ubuntu_linux:qemu-block-extra, p-cpe:/a:canonical:ubuntu_linux:qemu-system-x86-xen, p-cpe:/a:canonical:ubuntu_linux:qemu, p-cpe:/a:canonical:ubuntu_linux:qemu-system-ppc, p-cpe:/a:canonical:ubuntu_linux:qemu-system-xen, p-cpe:/a:canonical:ubuntu_linux:qemu-system, p-cpe:/a:canonical:ubuntu_linux:qemu-system-sparc

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 4/9/2026

Vulnerability Publication Date: 9/26/2024

Reference Information

CVE: CVE-2024-6519, CVE-2026-2243, CVE-2026-3195, CVE-2026-3196, CVE-2026-3842

IAVB: 2024-B-0141-S

USN: 8161-1