Double Free The advisory has been revoked - it doesn't affect any version of package libkadm5 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published18 Aug 2025
- disclosed16 Aug 2023
Introduced: 16 Aug 2023
CVE-2023-39975 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libkadm5 package and not the libkadm5 package as distributed by RHEL.
kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.
References
- https://access.redhat.com/security/cve/CVE-2023-39975
- https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
- https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
- https://security.netapp.com/advisory/ntap-20230915-0014/
- https://security.netapp.com/advisory/ntap-20240201-0005/
- https://security.netapp.com/advisory/ntap-20240201-0008/
- https://web.mit.edu/kerberos/www/advisories/