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Loop with Unreachable Exit Condition ('Infinite Loop') The advisory has been revoked - it doesn't affect any version of package qemu  (opens in a new tab)

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EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-UBUNTU1404-QEMU-1079195
  • published26 Feb 2021
  • disclosed16 Mar 2022
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Introduced: 26 Feb 2021

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

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.

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.