description: Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
problem types: Heap buffer overflow in nsTextFragment
affected:
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 115.6, status: affected, version: unspecified, versionType: custom
}
{
product: Thunderbird
vendor: Mozilla
versions:
lessThan: 115.6, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 121, status: affected, version: unspecified, versionType: custom
}
