Use After Free The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


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EPSS
0.95% (76th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-1728972
  • published7 Oct 2021
  • disclosed3 Nov 2021

Introduced: 7 Oct 2021

CVE-2021-38496  (opens in a new tab)
CWE-416  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.

NVD Description

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

During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.