vcdiff in Emacs 20.7 to 22.1.50, when used with SCCS, allows local users to overwrite arbitrary files via a symlink attack on temporary files.
| Software | From | Fixed in |
|---|---|---|
| gnu / emacs | 21.1 | 21.1.x |
| gnu / emacs | 21.3 | 21.3.x |
| gnu / emacs | 20.7 | 20.7.x |
| gnu / emacs | 21.2 | 21.2.x |
| gnu / sccs | - | - |
| gnu / emacs | 21.4 | 21.4.x |