description: A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
problem types: Use-after-free during worker shutdown
affected:
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 68.8, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 76, status: affected, version: unspecified, versionType: custom
}
{
product: Thunderbird
vendor: Mozilla
versions:
lessThan: 68.8.0, status: affected, version: unspecified, versionType: custom
}
