Description
Double free vulnerability in the krb5_recvauth function in MIT Kerberos 5 (krb5) 1.4.1 and earlier allows remote attackers to execute arbitrary code via certain error conditions.
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 ↗Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | krb5 +4 | 1.3.4-17 | RHSA-2005:567 |
| RHEL 3 | krb5 +4 | 1.2.7-47 | RHSA-2005:562 |
Advisories 3
- RHSA-2005:567 Red Hat Security Advisory: krb5 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2005:562 Red Hat Security Advisory: krb5 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-757-1 krb5 - buffer overflow, double-free memory Debian Security (DSA / DLA) · Mar 9, 2026
References
- 1014461 vdb-entry
- HPSBUX02152 vendor-advisory
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-003-recvauth.txt
- GLSA-200507-11 vendor-advisory
- RHSA-2005:567 vendor-advisory
- SUSE-SR:2005:017 vendor-advisory
- kerberos-kdc-krb5recvauth-execute-code(21055) vdb-entry
- 101810 vendor-advisory
- CLA-2005:993 vendor-advisory
- RHSA-2005:562 vendor-advisory
- ADV-2006-3776 vdb-entry
- TLSA-2005-78 vendor-advisory
- 14239 vdb-entry
- 16041 third-party-advisory
- USN-224-1 vendor-advisory
- 22090 third-party-advisory
- DSA-757 vendor-advisory
- APPLE-SA-2005-08-15 vendor-advisory
- 17135 third-party-advisory
- VU#623332 third-party-advisory
- oval:org.mitre.oval:def:9819 vdb-entry signature
- 20050712 MITKRB5-SA-2005-003: double-free in krb5_recvauth mailing-list
- 17899 third-party-advisory
- ADV-2005-1066 vdb-entry
- APPLE-SA-2005-08-17 vendor-advisory
- 2005-0036 vendor-advisory