Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu-arm package, versions <4.2.1-11.16.3


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES152-QEMUARM-2685305
  • published14 Apr 2022
  • disclosed16 Apr 2021

Introduced: 16 Apr 2021

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

How to fix?

Upgrade SLES:15.2 qemu-arm to version 4.2.1-11.16.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-arm package and not the qemu-arm package as distributed by SLES. See How to fix? for SLES:15.2 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