Medium: qemu

Issue Overview:

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario. (CVE-2021-3416)

There is a vulnerability in the lsi53c895a device which affects the latest version of qemu. The carefully designed PoC can repeatedly trigger DMA writes but does not limit the addresses written to the DMA, resulting in reentrancy issues and eventually overflow. (CVE-2023-0330)

9pfs: prevent opening special files: A malicious client could potentially escape from the exported 9p tree by creating and opening a device file on host side. (CVE-2023-2861)

Affected Packages:

qemu

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update qemu to update your system.

New Packages:

aarch64:  
    qemu-3.1.0-8.amzn2.0.11.aarch64  
    qemu-common-3.1.0-8.amzn2.0.11.aarch64  
    qemu-guest-agent-3.1.0-8.amzn2.0.11.aarch64  
    qemu-img-3.1.0-8.amzn2.0.11.aarch64  
    ivshmem-tools-3.1.0-8.amzn2.0.11.aarch64  
    qemu-block-curl-3.1.0-8.amzn2.0.11.aarch64  
    qemu-block-dmg-3.1.0-8.amzn2.0.11.aarch64  
    qemu-block-iscsi-3.1.0-8.amzn2.0.11.aarch64  
    qemu-block-nfs-3.1.0-8.amzn2.0.11.aarch64  
    qemu-block-rbd-3.1.0-8.amzn2.0.11.aarch64  
    qemu-block-ssh-3.1.0-8.amzn2.0.11.aarch64  
    qemu-audio-alsa-3.1.0-8.amzn2.0.11.aarch64  
    qemu-audio-oss-3.1.0-8.amzn2.0.11.aarch64  
    qemu-audio-pa-3.1.0-8.amzn2.0.11.aarch64  
    qemu-audio-sdl-3.1.0-8.amzn2.0.11.aarch64  
    qemu-ui-curses-3.1.0-8.amzn2.0.11.aarch64  
    qemu-ui-gtk-3.1.0-8.amzn2.0.11.aarch64  
    qemu-ui-sdl-3.1.0-8.amzn2.0.11.aarch64  
    qemu-kvm-3.1.0-8.amzn2.0.11.aarch64  
    qemu-kvm-core-3.1.0-8.amzn2.0.11.aarch64  
    qemu-user-3.1.0-8.amzn2.0.11.aarch64  
    qemu-user-binfmt-3.1.0-8.amzn2.0.11.aarch64  
    qemu-user-static-3.1.0-8.amzn2.0.11.aarch64  
    qemu-system-aarch64-3.1.0-8.amzn2.0.11.aarch64  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.11.aarch64  
    qemu-system-x86-3.1.0-8.amzn2.0.11.aarch64  
    qemu-system-x86-core-3.1.0-8.amzn2.0.11.aarch64  
    qemu-debuginfo-3.1.0-8.amzn2.0.11.aarch64  
  
i686:  
    qemu-3.1.0-8.amzn2.0.11.i686  
    qemu-common-3.1.0-8.amzn2.0.11.i686  
    qemu-guest-agent-3.1.0-8.amzn2.0.11.i686  
    qemu-img-3.1.0-8.amzn2.0.11.i686  
    ivshmem-tools-3.1.0-8.amzn2.0.11.i686  
    qemu-block-curl-3.1.0-8.amzn2.0.11.i686  
    qemu-block-dmg-3.1.0-8.amzn2.0.11.i686  
    qemu-block-iscsi-3.1.0-8.amzn2.0.11.i686  
    qemu-block-nfs-3.1.0-8.amzn2.0.11.i686  
    qemu-block-ssh-3.1.0-8.amzn2.0.11.i686  
    qemu-audio-alsa-3.1.0-8.amzn2.0.11.i686  
    qemu-audio-oss-3.1.0-8.amzn2.0.11.i686  
    qemu-audio-pa-3.1.0-8.amzn2.0.11.i686  
    qemu-audio-sdl-3.1.0-8.amzn2.0.11.i686  
    qemu-ui-curses-3.1.0-8.amzn2.0.11.i686  
    qemu-ui-gtk-3.1.0-8.amzn2.0.11.i686  
    qemu-ui-sdl-3.1.0-8.amzn2.0.11.i686  
    qemu-kvm-3.1.0-8.amzn2.0.11.i686  
    qemu-kvm-core-3.1.0-8.amzn2.0.11.i686  
    qemu-user-3.1.0-8.amzn2.0.11.i686  
    qemu-user-binfmt-3.1.0-8.amzn2.0.11.i686  
    qemu-user-static-3.1.0-8.amzn2.0.11.i686  
    qemu-system-aarch64-3.1.0-8.amzn2.0.11.i686  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.11.i686  
    qemu-system-x86-3.1.0-8.amzn2.0.11.i686  
    qemu-system-x86-core-3.1.0-8.amzn2.0.11.i686  
    qemu-debuginfo-3.1.0-8.amzn2.0.11.i686  
  
src:  
    qemu-3.1.0-8.amzn2.0.11.src  
  
x86_64:  
    qemu-3.1.0-8.amzn2.0.11.x86_64  
    qemu-common-3.1.0-8.amzn2.0.11.x86_64  
    qemu-guest-agent-3.1.0-8.amzn2.0.11.x86_64  
    qemu-img-3.1.0-8.amzn2.0.11.x86_64  
    ivshmem-tools-3.1.0-8.amzn2.0.11.x86_64  
    qemu-block-curl-3.1.0-8.amzn2.0.11.x86_64  
    qemu-block-dmg-3.1.0-8.amzn2.0.11.x86_64  
    qemu-block-iscsi-3.1.0-8.amzn2.0.11.x86_64  
    qemu-block-nfs-3.1.0-8.amzn2.0.11.x86_64  
    qemu-block-rbd-3.1.0-8.amzn2.0.11.x86_64  
    qemu-block-ssh-3.1.0-8.amzn2.0.11.x86_64  
    qemu-audio-alsa-3.1.0-8.amzn2.0.11.x86_64  
    qemu-audio-oss-3.1.0-8.amzn2.0.11.x86_64  
    qemu-audio-pa-3.1.0-8.amzn2.0.11.x86_64  
    qemu-audio-sdl-3.1.0-8.amzn2.0.11.x86_64  
    qemu-ui-curses-3.1.0-8.amzn2.0.11.x86_64  
    qemu-ui-gtk-3.1.0-8.amzn2.0.11.x86_64  
    qemu-ui-sdl-3.1.0-8.amzn2.0.11.x86_64  
    qemu-kvm-3.1.0-8.amzn2.0.11.x86_64  
    qemu-kvm-core-3.1.0-8.amzn2.0.11.x86_64  
    qemu-user-3.1.0-8.amzn2.0.11.x86_64  
    qemu-user-binfmt-3.1.0-8.amzn2.0.11.x86_64  
    qemu-user-static-3.1.0-8.amzn2.0.11.x86_64  
    qemu-system-aarch64-3.1.0-8.amzn2.0.11.x86_64  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.11.x86_64  
    qemu-system-x86-3.1.0-8.amzn2.0.11.x86_64  
    qemu-system-x86-core-3.1.0-8.amzn2.0.11.x86_64  
    qemu-debuginfo-3.1.0-8.amzn2.0.11.x86_64  

Additional References

Red Hat: CVE-2021-3416, CVE-2023-0330, CVE-2023-2861

Mitre: CVE-2021-3416, CVE-2023-0330, CVE-2023-2861