Description
Multiple integer overflows in the (1) dodecrypt and (2) doencrypt functions in cfs_fh.c in cfsd in Matt Blaze Cryptographic File System (CFS) 1.4.1 before Debian GNU/Linux package 1.4.1-17 allow local users to cause a denial of service (daemon crash) by appending data to a file that is larger than 2 Gb.
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 3.1 | cfs | 1.4.1-15sarge1 | DSA-1138-1 |
Advisories 1
- DSA-1138-1 cfs - integer overflow Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-1138 vendor-advisory
- 21341 third-party-advisory
- ADV-2006-3157 vdb-entry
- 19320 vdb-entry
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=371076
- 21310 third-party-advisory
- cfs-dodecrypt-dodencrypt-dos(28288) vdb-entry