Description
Memory leak in libmcrypt before 2.5.5 allows attackers to cause a denial of service (memory exhaustion) via a large number of requests to the application, which causes libmcrypt to dynamically load algorithms via libtool.
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 14 | libmcrypt | 2.5.5-1 | — |
| Debian 13 | libmcrypt | 2.5.5-1 | — |
| Debian 12 | libmcrypt | 2.5.5-1 | — |
| Debian 3.0 | libmcrypt | 2.5.0-1woody1 | DSA-228 |
Advisories 1
- DSA-228 libmcrypt - buffer overflows and memory leak Debian Security (DSA / DLA) · Mar 9, 2026
References
- 20030103 Multiple libmcrypt vulnerabilities mailing-list
- 20030105 GLSA: libmcrypt mailing-list
- DSA-228 vendor-advisory
- CLA-2003:567 vendor-advisory
- 6512 vdb-entry
- libmcrypt-libtool-memory-leak(10988) vdb-entry