Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu-system-aarch64 package, versions <15:4.2.1-13.el7


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ORACLE7-QEMUSYSTEMAARCH64-2598991
  • published10 Apr 2022
  • disclosed16 Mar 2022

Introduced: 16 Mar 2022

CVE-2021-20257  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Oracle:7 qemu-system-aarch64 to version 15:4.2.1-13.el7 or higher.
This issue was patched in ELSA-2021-9638.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-system-aarch64 package and not the qemu-system-aarch64 package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1