Large branch table could lead to truncated instruction
On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address.
firefox security update
Released 2025-07-24 · Red Hat rating Important · View on Red Hat →
On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address.
The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials.
Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140.
Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140.
XSLT document loading did not correctly propagate the source document which bypassed its CSP.
Insufficient escaping in the “Copy as cURL” feature could potentially be used to trick a user into executing unexpected code.
Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags.
The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref.
On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack.