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Amazon Linux AMI 2: CVE-2021-3527: Security patch for qemu (ALAS-2023-2061)

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Amazon Linux AMI 2: CVE-2021-3527: Security patch for qemu (ALAS-2023-2061)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
05/26/2021
Created
06/06/2023
Added
06/06/2023
Modified
06/06/2023

Description

A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.

Solution(s)

  • amazon-linux-ami-2-upgrade-ivshmem-tools
  • amazon-linux-ami-2-upgrade-qemu
  • amazon-linux-ami-2-upgrade-qemu-audio-alsa
  • amazon-linux-ami-2-upgrade-qemu-audio-oss
  • amazon-linux-ami-2-upgrade-qemu-audio-pa
  • amazon-linux-ami-2-upgrade-qemu-audio-sdl
  • amazon-linux-ami-2-upgrade-qemu-block-curl
  • amazon-linux-ami-2-upgrade-qemu-block-dmg
  • amazon-linux-ami-2-upgrade-qemu-block-iscsi
  • amazon-linux-ami-2-upgrade-qemu-block-nfs
  • amazon-linux-ami-2-upgrade-qemu-block-rbd
  • amazon-linux-ami-2-upgrade-qemu-block-ssh
  • amazon-linux-ami-2-upgrade-qemu-common
  • amazon-linux-ami-2-upgrade-qemu-debuginfo
  • amazon-linux-ami-2-upgrade-qemu-guest-agent
  • amazon-linux-ami-2-upgrade-qemu-img
  • amazon-linux-ami-2-upgrade-qemu-kvm
  • amazon-linux-ami-2-upgrade-qemu-kvm-core
  • amazon-linux-ami-2-upgrade-qemu-system-aarch64
  • amazon-linux-ami-2-upgrade-qemu-system-aarch64-core
  • amazon-linux-ami-2-upgrade-qemu-system-x86
  • amazon-linux-ami-2-upgrade-qemu-system-x86-core
  • amazon-linux-ami-2-upgrade-qemu-ui-curses
  • amazon-linux-ami-2-upgrade-qemu-ui-gtk
  • amazon-linux-ami-2-upgrade-qemu-ui-sdl
  • amazon-linux-ami-2-upgrade-qemu-user
  • amazon-linux-ami-2-upgrade-qemu-user-binfmt
  • amazon-linux-ami-2-upgrade-qemu-user-static

References

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