{"schema_version":"1.7.2","id":"OESA-2026-2170","modified":"2026-05-03T09:56:59Z","published":"2026-05-03T09:56:59Z","upstream":["CVE-2026-6245"],"summary":"sssd security update","details":"Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).(CVE-2026-6245)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"sssd","purl":"pkg:rpm/openEuler/sssd&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-18.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["libipa_hbac-2.9.4-18.oe2403sp1.aarch64.rpm","libipa_hbac-devel-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_autofs-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_certmap-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_certmap-devel-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_idmap-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_idmap-devel-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_nss_idmap-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_nss_idmap-devel-2.9.4-18.oe2403sp1.aarch64.rpm","libsss_sudo-2.9.4-18.oe2403sp1.aarch64.rpm","python3-libipa_hbac-2.9.4-18.oe2403sp1.aarch64.rpm","python3-libsss_nss_idmap-2.9.4-18.oe2403sp1.aarch64.rpm","python3-sss-2.9.4-18.oe2403sp1.aarch64.rpm","python3-sss-murmur-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-ad-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-client-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-common-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-common-pac-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-dbus-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-debuginfo-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-debugsource-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-idp-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-ipa-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-kcm-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-krb5-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-krb5-common-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-ldap-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-nfs-idmap-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-proxy-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-tools-2.9.4-18.oe2403sp1.aarch64.rpm","sssd-winbind-idmap-2.9.4-18.oe2403sp1.aarch64.rpm"],"noarch":["python3-sssdconfig-2.9.4-18.oe2403sp1.noarch.rpm","sssd-help-2.9.4-18.oe2403sp1.noarch.rpm"],"src":["sssd-2.9.4-18.oe2403sp1.src.rpm"],"x86_64":["libipa_hbac-2.9.4-18.oe2403sp1.x86_64.rpm","libipa_hbac-devel-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_autofs-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_certmap-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_certmap-devel-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_idmap-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_idmap-devel-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_nss_idmap-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_nss_idmap-devel-2.9.4-18.oe2403sp1.x86_64.rpm","libsss_sudo-2.9.4-18.oe2403sp1.x86_64.rpm","python3-libipa_hbac-2.9.4-18.oe2403sp1.x86_64.rpm","python3-libsss_nss_idmap-2.9.4-18.oe2403sp1.x86_64.rpm","python3-sss-2.9.4-18.oe2403sp1.x86_64.rpm","python3-sss-murmur-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-ad-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-client-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-common-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-common-pac-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-dbus-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-debuginfo-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-debugsource-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-idp-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-ipa-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-kcm-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-krb5-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-krb5-common-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-ldap-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-nfs-idmap-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-proxy-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-tools-2.9.4-18.oe2403sp1.x86_64.rpm","sssd-winbind-idmap-2.9.4-18.oe2403sp1.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2170"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6245"}],"database_specific":{"severity":"Medium"}}