{"id":"CVE-2026-107778","summary":"MIT krb5 through 1.22.2 NULL Pointer Dereference via krb5_rd_cred()","details":"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.","modified":"2026-10-09T10:46:12.489076149Z","published":"2026-10-08T20:15:54.159Z","database_specific":{"cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107778.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107778.json"},{"type":"PACKAGE","url":"https://github.com/krb5/krb5"},{"type":"ARTICLE","url":"https://github.com/krb5/krb5/blob/krb5-1.22.2-final/src/lib/krb5/krb/rd_cred.c#L77-L112"},{"type":"FIX","url":"https://github.com/krb5/krb5/commit/48afa9abb89ab2176bb20624d87d010b9984fc08"},{"type":"FIX","url":"https://github.com/krb5/krb5/commit/62196e2b269159a5465f5b8d0ed7cf6f29c3282a"},{"type":"FIX","url":"https://github.com/krb5/krb5/pull/1511"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107778"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/mit-krb5-through-1.22.2-null-pointer-dereference-via-krb5-rd-cred"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/krb5/krb5","events":[{"introduced":"0"},{"last_affected":"8570e77819563e036027e1da789d08ec9333ed4d"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.22.2"}],"source":"AFFECTED_FIELD"}}],"versions":["krb5-1.22.2-final","krb5-1.22.1-final","krb5-1.22-final","krb5-1.22-beta1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107778.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}