The vulnerability in the `mozilla::a11y::DocAccessible::PutChildrenBack` function of Mozilla Firefox, Firefox ESR, and the Thunderbird email client allows a attacker to trigger a service failure.

The vulnerability of the mozilla::a11y::DocAccessible::PutChildrenBack function in Mozilla Firefox, Firefox ESR, and the Thunderbird email client arises due to an operation that goes beyond the buffer boundaries in memory when working with ARIA Accessible Rich Internet Applications attributes usi...