========================================================================== Ubuntu Security Notice USN-7744-1 September 11, 2025
qemu vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in QEMU. Software Description: - qemu: Machine emulator and virtualizer Details: It was discovered that QEMU incorrectly handled certain virtio devices. A privileged guest attacker could use this issue to cause QEMU to crash, leading to a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-3446) It was discovered that QEMU incorrectly handled SDHCI device emulation. A guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-3447) It was discovered that QEMU incorrectly handled calculating the checksum of a short-sized fragmented packet. A guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-3567) It was discovered that the QEMU qemu-img utility incorrectly handled certain crafted image files. An attacker could use this issue to cause QEMU to consume resources, leading to a denial of service, or possibly read and write to an existing external file. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-4467) It was discovered that QEMU incorrectly handled the RSS feature on virtio-net devices. A privileged guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-6505) It was discovered that QEMU incorrectly handled the NBD server. An attacker could use this issue to cause QEMU to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-7409) It was discovered that QEMU incorrectly handled certain USB devices. A guest attacker could possibly use this issue to cause QEMU to crash, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-8354) It was discovered that the QEMU package incorrectly set up a binfmt_misc registration with the C (Credential) flag. A local attacker could use this with a suid/sgid binary to escalate privileges. This update will no longer run foreign-architecture binaries with suid/sgid with elevated privileges. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.04 qemu-system 1:9.2.1+ds-1ubuntu5.2 qemu-system-arm 1:9.2.1+ds-1ubuntu5.2 qemu-system-mips 1:9.2.1+ds-1ubuntu5.2 qemu-system-misc 1:9.2.1+ds-1ubuntu5.2 qemu-system-ppc 1:9.2.1+ds-1ubuntu5.2 qemu-system-riscv 1:9.2.1+ds-1ubuntu5.2 qemu-system-s390x 1:9.2.1+ds-1ubuntu5.2 qemu-system-sparc 1:9.2.1+ds-1ubuntu5.2 qemu-system-x86 1:9.2.1+ds-1ubuntu5.2 qemu-system-x86-xen 1:9.2.1+ds-1ubuntu5.2 qemu-system-xen 1:9.2.1+ds-1ubuntu5.2 Ubuntu 24.04 LTS qemu-system 1:8.2.2+ds-0ubuntu1.10 qemu-system-arm 1:8.2.2+ds-0ubuntu1.10 qemu-system-mips 1:8.2.2+ds-0ubuntu1.10 qemu-system-misc 1:8.2.2+ds-0ubuntu1.10 qemu-system-ppc 1:8.2.2+ds-0ubuntu1.10 qemu-system-s390x 1:8.2.2+ds-0ubuntu1.10 qemu-system-sparc 1:8.2.2+ds-0ubuntu1.10 qemu-system-x86 1:8.2.2+ds-0ubuntu1.10 qemu-system-x86-xen 1:8.2.2+ds-0ubuntu1.10 qemu-system-xen 1:8.2.2+ds-0ubuntu1.10 Ubuntu 22.04 LTS qemu-system 1:6.2+dfsg-2ubuntu6.27 qemu-system-arm 1:6.2+dfsg-2ubuntu6.27 qemu-system-mips 1:6.2+dfsg-2ubuntu6.27 qemu-system-misc 1:6.2+dfsg-2ubuntu6.27 qemu-system-ppc 1:6.2+dfsg-2ubuntu6.27 qemu-system-s390x 1:6.2+dfsg-2ubuntu6.27 qemu-system-sparc 1:6.2+dfsg-2ubuntu6.27 qemu-system-x86 1:6.2+dfsg-2ubuntu6.27 qemu-system-x86-microvm 1:6.2+dfsg-2ubuntu6.27 qemu-system-x86-xen 1:6.2+dfsg-2ubuntu6.27 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-7744-1 CVE-2024-3446, CVE-2024-3447, CVE-2024-3567, CVE-2024-4467, CVE-2024-6505, CVE-2024-7409, CVE-2024-8354, https://bugs.launchpad.net/bugs/2120814 Package Information: https://launchpad.net/ubuntu/+source/qemu/1:9.2.1+ds-1ubuntu5.2 https://launchpad.net/ubuntu/+source/qemu/1:8.2.2+ds-0ubuntu1.10 https://launchpad.net/ubuntu/+source/qemu/1:6.2+dfsg-2ubuntu6.27
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