Description
tkdiff before 4.1.1 allows local users to overwrite arbitrary files via a symlink attack on temporary files.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗Advisories 1
- DSA-927-1 tkdiff - insecure temporary file Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://sourceforge.net/project/shownotes.php?release_id=380030&group_id=64960
- 16064 vdb-entry
- DSA-927 vendor-advisory
- tkdiff-tmp-file-symlink(23858) vdb-entry
- 18083 third-party-advisory
- 21933 vdb-entry
- 18215 third-party-advisory
- MDKSA-2006:001 vendor-advisory
- 1015421 vdb-entry