Multiple integer overflows in the (1) FontFileAddEntry and (2) lexAlias functions in X.Org libXfont before 1.4.8 and 1.4.9x before 1.4.99.901 might allow local users to gain privileges by adding a directory with a large fonts.dir or fonts.alias file to the font path, which triggers a heap-based buffer overflow, related to metadata.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libxfont | X | * | 1.4.7 (including) |
| Libxfont | X | 1.2.3 (including) | 1.2.3 (including) |
| Libxfont | X | 1.2.4 (including) | 1.2.4 (including) |
| Libxfont | X | 1.2.5 (including) | 1.2.5 (including) |
| Libxfont | X | 1.2.6 (including) | 1.2.6 (including) |
| Libxfont | X | 1.2.7 (including) | 1.2.7 (including) |
| Libxfont | X | 1.2.8 (including) | 1.2.8 (including) |
| Libxfont | X | 1.2.9 (including) | 1.2.9 (including) |
| Libxfont | X | 1.3.0 (including) | 1.3.0 (including) |
| Libxfont | X | 1.3.1 (including) | 1.3.1 (including) |
| Libxfont | X | 1.3.2 (including) | 1.3.2 (including) |
| Libxfont | X | 1.3.3 (including) | 1.3.3 (including) |
| Libxfont | X | 1.3.4 (including) | 1.3.4 (including) |
| Libxfont | X | 1.4.0 (including) | 1.4.0 (including) |
| Libxfont | X | 1.4.1 (including) | 1.4.1 (including) |
| Libxfont | X | 1.4.2 (including) | 1.4.2 (including) |
| Libxfont | X | 1.4.3 (including) | 1.4.3 (including) |
| Libxfont | X | 1.4.4 (including) | 1.4.4 (including) |
| Libxfont | X | 1.4.5 (including) | 1.4.5 (including) |
| Libxfont | X | 1.4.6 (including) | 1.4.6 (including) |
| Libxfont | X | 1.4.99 (including) | 1.4.99 (including) |