A security issue was found in Firefox before version 85.0. Performing garbage collection on re-declared JavaScript variables resulted in a use-after-poison, and a potentially exploitable crash.
A security issue was found in Firefox before version 85.0. Performing garbage collection on re-declared JavaScript variables resulted in a use-after-poison, and a potentially exploitable crash.
https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23960 https://bugzilla.mozilla.org/show_bug.cgi?id=1675755
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