A QEMU security update has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, 22.10, and 23.04.

[USN-6167-1] QEMU vulnerabilities

=========================================================================
Ubuntu Security Notice USN-6167-1
June 19, 2023

qemu vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in QEMU.

Software Description:
- qemu: Machine emulator and virtualizer

Details:

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)

Update instructions:

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

Ubuntu 23.04:
qemu-guest-agent 1:7.2+dfsg-5ubuntu2.2
qemu-system 1:7.2+dfsg-5ubuntu2.2
qemu-system-arm 1:7.2+dfsg-5ubuntu2.2
qemu-system-common 1:7.2+dfsg-5ubuntu2.2
qemu-system-data 1:7.2+dfsg-5ubuntu2.2
qemu-system-gui 1:7.2+dfsg-5ubuntu2.2
qemu-system-mips 1:7.2+dfsg-5ubuntu2.2
qemu-system-misc 1:7.2+dfsg-5ubuntu2.2
qemu-system-ppc 1:7.2+dfsg-5ubuntu2.2
qemu-system-s390x 1:7.2+dfsg-5ubuntu2.2
qemu-system-sparc 1:7.2+dfsg-5ubuntu2.2
qemu-system-x86 1:7.2+dfsg-5ubuntu2.2
qemu-system-x86-xen 1:7.2+dfsg-5ubuntu2.2
qemu-system-xen 1:7.2+dfsg-5ubuntu2.2

Ubuntu 22.10:
qemu-guest-agent 1:7.0+dfsg-7ubuntu2.6
qemu-system 1:7.0+dfsg-7ubuntu2.6
qemu-system-arm 1:7.0+dfsg-7ubuntu2.6
qemu-system-common 1:7.0+dfsg-7ubuntu2.6
qemu-system-data 1:7.0+dfsg-7ubuntu2.6
qemu-system-gui 1:7.0+dfsg-7ubuntu2.6
qemu-system-mips 1:7.0+dfsg-7ubuntu2.6
qemu-system-misc 1:7.0+dfsg-7ubuntu2.6
qemu-system-ppc 1:7.0+dfsg-7ubuntu2.6
qemu-system-s390x 1:7.0+dfsg-7ubuntu2.6
qemu-system-sparc 1:7.0+dfsg-7ubuntu2.6
qemu-system-x86 1:7.0+dfsg-7ubuntu2.6
qemu-system-x86-xen 1:7.0+dfsg-7ubuntu2.6
qemu-system-xen 1:7.0+dfsg-7ubuntu2.6

Ubuntu 22.04 LTS:
qemu 1:6.2+dfsg-2ubuntu6.11
qemu-guest-agent 1:6.2+dfsg-2ubuntu6.11
qemu-system 1:6.2+dfsg-2ubuntu6.11
qemu-system-arm 1:6.2+dfsg-2ubuntu6.11
qemu-system-common 1:6.2+dfsg-2ubuntu6.11
qemu-system-data 1:6.2+dfsg-2ubuntu6.11
qemu-system-gui 1:6.2+dfsg-2ubuntu6.11
qemu-system-mips 1:6.2+dfsg-2ubuntu6.11
qemu-system-misc 1:6.2+dfsg-2ubuntu6.11
qemu-system-ppc 1:6.2+dfsg-2ubuntu6.11
qemu-system-s390x 1:6.2+dfsg-2ubuntu6.11
qemu-system-sparc 1:6.2+dfsg-2ubuntu6.11
qemu-system-x86 1:6.2+dfsg-2ubuntu6.11
qemu-system-x86-microvm 1:6.2+dfsg-2ubuntu6.11
qemu-system-x86-xen 1:6.2+dfsg-2ubuntu6.11

Ubuntu 20.04 LTS:
qemu 1:4.2-3ubuntu6.27
qemu-guest-agent 1:4.2-3ubuntu6.27
qemu-kvm 1:4.2-3ubuntu6.27
qemu-system 1:4.2-3ubuntu6.27
qemu-system-arm 1:4.2-3ubuntu6.27
qemu-system-common 1:4.2-3ubuntu6.27
qemu-system-data 1:4.2-3ubuntu6.27
qemu-system-gui 1:4.2-3ubuntu6.27
qemu-system-mips 1:4.2-3ubuntu6.27
qemu-system-misc 1:4.2-3ubuntu6.27
qemu-system-ppc 1:4.2-3ubuntu6.27
qemu-system-s390x 1:4.2-3ubuntu6.27
qemu-system-sparc 1:4.2-3ubuntu6.27
qemu-system-x86 1:4.2-3ubuntu6.27
qemu-system-x86-microvm 1:4.2-3ubuntu6.27
qemu-system-x86-xen 1:4.2-3ubuntu6.27

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
qemu 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-guest-agent 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-kvm 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-arm 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-common 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-mips 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-misc 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-ppc 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-s390x 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-sparc 1:2.11+dfsg-1ubuntu7.42+esm1
qemu-system-x86 1:2.11+dfsg-1ubuntu7.42+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
qemu 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-guest-agent 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-kvm 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-arm 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-common 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-mips 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-misc 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-ppc 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-s390x 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-sparc 1:2.5+dfsg-5ubuntu10.51+esm2
qemu-system-x86 1:2.5+dfsg-5ubuntu10.51+esm2

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
qemu 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-common 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-guest-agent 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-kvm 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-arm 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-common 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-mips 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-misc 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.47+esm3
qemu-system-x86 2.0.0+dfsg-2ubuntu1.47+esm3

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-6167-1
CVE-2022-1050, CVE-2022-4144, CVE-2022-4172, CVE-2023-0330

Package Information:
https://launchpad.net/ubuntu/+source/qemu/1:7.2+dfsg-5ubuntu2.2
https://launchpad.net/ubuntu/+source/qemu/1:7.0+dfsg-7ubuntu2.6
https://launchpad.net/ubuntu/+source/qemu/1:6.2+dfsg-2ubuntu6.11
https://launchpad.net/ubuntu/+source/qemu/1:4.2-3ubuntu6.27