During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
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"binary_version": "118.0.1+build1-0ubuntu0.20.04.1",
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"availability": "No subscription required",
"binaries": [
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"binary_name": "xul-ext-calendar-timezones"
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"availability": "No subscription required",
"binaries": [
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"binary_name": "xul-ext-calendar-timezones"
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