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Oracle Linux: (CVE-2021-3527) ELSA-2021-9425: qemu security update

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Oracle Linux: (CVE-2021-3527) ELSA-2021-9425: qemu security update

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
05/26/2021
Created
08/19/2021
Added
08/17/2021
Modified
08/17/2021

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)

  • oracle-linux-upgrade-ivshmem-tools
  • oracle-linux-upgrade-qemu
  • oracle-linux-upgrade-qemu-block-gluster
  • oracle-linux-upgrade-qemu-block-iscsi
  • oracle-linux-upgrade-qemu-block-rbd
  • oracle-linux-upgrade-qemu-common
  • oracle-linux-upgrade-qemu-img
  • oracle-linux-upgrade-qemu-kvm
  • oracle-linux-upgrade-qemu-kvm-core
  • oracle-linux-upgrade-qemu-system-aarch64
  • oracle-linux-upgrade-qemu-system-aarch64-core
  • oracle-linux-upgrade-qemu-system-x86
  • oracle-linux-upgrade-qemu-system-x86-core

References

  • ELSA-2021-9425
  • CVE-2021-3527
  • USN-5010-1

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