{"id":"OESA-2026-4494","summary":"krb5 security update","details":"Kerberos is a network authentication protocol. It is designed to provide strong authentication for client/server applications by using secret-key cryptography.\r\n\r\nSecurity Fix(es):\n\nMIT 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.(CVE-2026-107778)","modified":"2026-10-22T14:45:11.880679629Z","published":"2026-10-22T14:35:48Z","upstream":["CVE-2026-107778"],"database_specific":{"severity":"Medium"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4494"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107778"}],"affected":[{"package":{"name":"krb5","ecosystem":"openEuler:22.03-LTS-SP4","purl":"pkg:rpm/openEuler/krb5&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.2-33.oe2203sp4"}]}],"ecosystem_specific":{"src":["krb5-1.19.2-33.oe2203sp4.src.rpm"],"x86_64":["krb5-1.19.2-33.oe2203sp4.x86_64.rpm","krb5-client-1.19.2-33.oe2203sp4.x86_64.rpm","krb5-debuginfo-1.19.2-33.oe2203sp4.x86_64.rpm","krb5-debugsource-1.19.2-33.oe2203sp4.x86_64.rpm","krb5-devel-1.19.2-33.oe2203sp4.x86_64.rpm","krb5-libs-1.19.2-33.oe2203sp4.x86_64.rpm","krb5-server-1.19.2-33.oe2203sp4.x86_64.rpm"],"aarch64":["krb5-1.19.2-33.oe2203sp4.aarch64.rpm","krb5-client-1.19.2-33.oe2203sp4.aarch64.rpm","krb5-debuginfo-1.19.2-33.oe2203sp4.aarch64.rpm","krb5-debugsource-1.19.2-33.oe2203sp4.aarch64.rpm","krb5-devel-1.19.2-33.oe2203sp4.aarch64.rpm","krb5-libs-1.19.2-33.oe2203sp4.aarch64.rpm","krb5-server-1.19.2-33.oe2203sp4.aarch64.rpm"],"noarch":["krb5-help-1.19.2-33.oe2203sp4.noarch.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4494.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}