MFSA2021-33 Firefox: Security Vulnerabilities fixed in Firefox 91 (CVE-2021-29981)
7
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
08/10/2021
08/12/2021
08/12/2021
08/27/2021
Description
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.
Solution(s)
- mozilla-firefox-upgrade-91_0
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