Description
FUSE 2.x before 2.3.0 does not properly clear previously used memory from unfilled pages when the filesystem returns a short byte count to a read request, which may allow local users to obtain sensitive information.
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 ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | fuse | 2.3.0-1 | — |
| Debian 12 | fuse | 2.3.0-1 | — |
| Debian 3.1 | fuse | 2.2.1-4sarge2 | DSA-744-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- FUSE 2.2/2.3 - Local Information Disclosure EDB-25789 · local · Jun 6, 2005 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-744-1 fuse - programming error Debian Security (DSA / DLA) · Mar 9, 2026
References
- 16024 third-party-advisory
- http://bugs.debian.org/311634
- 13857 vdb-entry
- 1014107 vdb-entry
- 15561 third-party-advisory
- http://sourceforge.net/project/shownotes.php?release_id=331884
- http://www.sven-tantau.de/public_files/fuse/fuse_20050603.txt
- DSA-744 vendor-advisory
- 17042 vdb-entry