description: The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver.  This issue could allow an attacker to perform remote code execution and sandbox escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
problem types: Heap-buffer-overflow affecting WebGL DrawElementsInstanced method with Mesa VM driver
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
}
