FontForge v20230101 was discovered to contain a memory leak via the utf7toutf8_copy function at /fontforge/sfd.c.
Weakness
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fontforge | Fontforge | 2023-01-01 (including) | 2023-01-01 (including) |
| Fontforge | Ubuntu | devel | * |
| Fontforge | Ubuntu | esm-apps/bionic | * |
| Fontforge | Ubuntu | esm-apps/focal | * |
| Fontforge | Ubuntu | esm-apps/jammy | * |
| Fontforge | Ubuntu | esm-apps/noble | * |
| Fontforge | Ubuntu | esm-apps/xenial | * |
| Fontforge | Ubuntu | jammy | * |
| Fontforge | Ubuntu | noble | * |
| Fontforge | Ubuntu | plucky | * |
| Fontforge | Ubuntu | questing | * |
| Fontforge | Ubuntu | upstream | * |
Potential Mitigations
- Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
- For example, glibc in Linux provides protection against free of invalid pointers.
- When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
- To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.