CVE-2021-29981

Summary:

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.

Reference Links(if available):

https://bugzilla.mozilla.org/show_bug.cgi?id=1707774

https://www.mozilla.org/security/advisories/mfsa2021-33/

https://www.mozilla.org/security/advisories/mfsa2021-36/

CVSS Score (if available)

v2: / MEDIUM

v3: /

Links to Exploits(if available)