CVE-2026-107778
mediumMIT Kerberos 5 (krb5) through 1.22.2 contains a NULL pointer dereference in make_cred_list() in rd_cred.c that allows authenticated Kerberos clients to crash s…
MIT Kerberos 5 (krb5) through 1.22.2 contains a NULL pointer dereference in make_cred_list() in rd_cred.c that allows authenticated Kerberos clients to crash services by sending mismatched KRB-CRED arrays. Attackers can send forwarded credentials with more tickets than ticket_info entries through gss_accept_sec_context() to crash GSS-API acceptor services, causing denial of service.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/krb5/krb5 disclosure@vulncheck.com
- https://github.com/krb5/krb5/blob/krb5-1.22.2-final/src/lib/krb5/krb/rd_cred.c#L77-L112 disclosure@vulncheck.com
- https://github.com/krb5/krb5/commit/48afa9abb89ab2176bb20624d87d010b9984fc08 disclosure@vulncheck.com
- https://github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282a disclosure@vulncheck.com
- https://github.com/krb5/krb5/pull/1511 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-... disclosure@vulncheck.com