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Ubuntu 25.10 QEMU High Denial of Service Vulnerabilities USN-8087-1

ubuntu
Calendar Grey March 4, 2026
Dist Ubuntu Esm H88
Critical updates for QEMU resolve multiple security issues, including potential denial of service risks across Ubuntu versions.
Several security issues were fixed in QEMU.

Summary

Several security issues were fixed in QEMU.

Software Description:

- qemu: Machine emulator and virtualizer

Details:

It was discovered that the UHCI controller implementation of QEMU could be

brought into an invalid state. An attacker inside the guest could possibly

use this issue to cause QEMU to crash, resulting in a denial of service.

(CVE-2024-8354)

It was discovered that QEMU incorrectly handled memory during certain VNC

operations. An remote attacker could possibly use this issue to cause QEMU

to crash, resulting in a denial of service, or possibly execute arbitrary

code. (CVE-2025-11234)

It was discovered that the e1000 network 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-2025-12464)

It was discovered that the virtio-crypto device im...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system update medium QEMU

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  qemu-system                     1:10.1.0+ds-5ubuntu2.4
  qemu-system-arm                 1:10.1.0+ds-5ubuntu2.4
  qemu-system-common              1:10.1.0+ds-5ubuntu2.4
  qemu-system-data                1:10.1.0+ds-5ubuntu2.4
  qemu-system-gui                 1:10.1.0+ds-5ubuntu2.4
  qemu-system-mips                1:10.1.0+ds-5ubuntu2.4
  qemu-system-misc                1:10.1.0+ds-5ubuntu2.4
  qemu-system-modules-opengl      1:10.1.0+ds-5ubuntu2.4
  qemu-system-modules-spice       1:10.1.0+ds-5ubuntu2.4
  qemu-system-ppc                 1:10.1.0+ds-5ubuntu2.4
  qemu-system-riscv               1:10.1.0+ds-5ubuntu2.4
  qemu-system-s390x               1:10.1.0+ds-5ubuntu2.4
  qemu-system-sparc               1:10.1.0+ds-5ubuntu2.4
  qemu-system-x86                 1:10.1.0+ds-5ubuntu2.4
  qemu-system-x86-xen             1:10.1.0+ds-5ubuntu2.4
  qemu-system-xen                 1:10.1.0+ds-5ubuntu2.4

Ubuntu 24.04 LTS
  qemu-system                     1:8.2.2+ds-0ubuntu1.13
  qemu-system-arm                 1:8.2.2+ds-0ubuntu1.13
  qemu-system-common              1:8.2.2+ds-0ubuntu1.13
  qemu-system-data                1:8.2.2+ds-0ubuntu1.13
  qemu-system-gui                 1:8.2.2+ds-0ubuntu1.13
  qemu-system-mips                1:8.2.2+ds-0ubuntu1.13
  qemu-system-misc                1:8.2.2+ds-0ubuntu1.13
  qemu-system-modules-opengl      1:8.2.2+ds-0ubuntu1.13
  qemu-system-modules-spice       1:8.2.2+ds-0ubuntu1.13
  qemu-system-ppc                 1:8.2.2+ds-0ubuntu1.13
  qemu-system-s390x               1:8.2.2+ds-0ubuntu1.13
  qemu-system-sparc               1:8.2.2+ds-0ubuntu1.13
  qemu-system-x86                 1:8.2.2+ds-0ubuntu1.13
  qemu-system-x86-xen             1:8.2.2+ds-0ubuntu1.13
  qemu-system-xen                 1:8.2.2+ds-0ubuntu1.13

Ubuntu 22.04 LTS
  qemu                            1:6.2+dfsg-2ubuntu6.28
  qemu-system                     1:6.2+dfsg-2ubuntu6.28
  qemu-system-arm                 1:6.2+dfsg-2ubuntu6.28
  qemu-system-common              1:6.2+dfsg-2ubuntu6.28
  qemu-system-data                1:6.2+dfsg-2ubuntu6.28
  qemu-system-gui                 1:6.2+dfsg-2ubuntu6.28
  qemu-system-mips                1:6.2+dfsg-2ubuntu6.28
  qemu-system-misc                1:6.2+dfsg-2ubuntu6.28
  qemu-system-ppc                 1:6.2+dfsg-2ubuntu6.28
  qemu-system-s390x               1:6.2+dfsg-2ubuntu6.28
  qemu-system-sparc               1:6.2+dfsg-2ubuntu6.28
  qemu-system-x86                 1:6.2+dfsg-2ubuntu6.28
  qemu-system-x86-microvm         1:6.2+dfsg-2ubuntu6.28
  qemu-system-x86-xen             1:6.2+dfsg-2ubuntu6.28

After a standard system update you need to restart all QEMU virtual
machines to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8073-1

CVE-2024-8354, CVE-2025-11234, CVE-2025-12464, CVE-2025-14876,

CVE-2026-0665

Severity
medium
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8073-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu system update medium QEMU

Package Information

https://launchpad.net/ubuntu/+source/qemu/1:10.1.0+ds-5ubuntu2.4
https://launchpad.net/ubuntu/+source/qemu/1:8.2.2+ds-0ubuntu1.13
https://launchpad.net/ubuntu/+source/qemu/1:6.2+dfsg-2ubuntu6.28

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