Loop with Unreachable Exit Condition ('Infinite Loop') Affecting lxd package, versions <3.0.3-0ubuntu1~18.04.2+esm2


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
7.49% (94th percentile)

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  • Snyk IDSNYK-UBUNTU1804-LXD-15801893
  • published29 Mar 2026
  • disclosed26 May 2021

Introduced: 26 May 2021

CVE-2021-33194  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 lxd to version 3.0.3-0ubuntu1~18.04.2+esm2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream lxd package and not the lxd package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

golang.org/x/net before v0.0.0-20210520170846-37e1c6afe023 allows attackers to cause a denial of service (infinite loop) via crafted ParseFragment input.

CVSS Base Scores

version 3.1