A security issue has been found in Firefox before version 91 and Thunderbird before version 78.13. Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
A security issue has been found in Firefox before version 91 and Thunderbird before version 78.13. Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash.
https://www.mozilla.org/security/advisories/mfsa2021-33/ https://www.mozilla.org/security/advisories/mfsa2021-35/ https://bugzilla.mozilla.org/show_bug.cgi?id=1720031
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