After a VR Process is destroyed, a reference to it may have been retained and used, leading to a use-after-free and potentially exploitable crash. This vulnerability affects Thunderbird < 91.8 and Firefox ESR < 91.8.
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{ "binaries": [ { "binary_name": "thunderbird", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:91.8.1+build1-0ubuntu0.20.04.1" } ], "availability": "No subscription required" }