CVE-2021-29981 The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


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EPSS
0.45% (63rd percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-1540139
  • published11 Aug 2021
  • disclosed17 Aug 2021

Introduced: 11 Aug 2021

CVE-2021-29981  (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.

An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.