CVE-2025-62490
Description
In quickjs, in js_print_object, when printing an array, the function first fetches the array length and then loops over it. The issue is, printing a value is not side-effect free. An attacker-defined callback could run during js_print_value, during which the array could get resized and len1 become out of bounds. This results in a use-after-free.A second instance occurs in the same function during printing of a map or set objects. The code iterates over ms->records list, but once again, elements could be removed from the list during js_print_value call.
How to fix
- quickjs_project quickjs2025-09-13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| quickjs_project quickjs | v < 2025-09-13 | 2025-09-13 |
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