{"id":"AZL-106836","summary":"CVE-2026-107708 affecting package krb5 1.21.3-5","details":"MIT krb5 through 1.22.2 contains a NULL pointer dereference vulnerability in the KDC's get_pac_princ_with_realm() that returns success while leaving the client principal NULL on malformed names. A malicious or compromised cross-realm trusted KDC can send an S4U2Proxy request with a PAC carrying a malformed client name to crash krb5kdc and deny authentication.","modified":"2026-10-09T14:17:20.608883828Z","published":"2026-10-08T21:17:52Z","upstream":["CVE-2026-107708"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107708"}],"affected":[{"package":{"name":"krb5","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/krb5"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.21.3-5"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-106836.json"}}],"schema_version":"1.9.0"}