UBUNTU-CVE-2026-104039

A flaw was found in SSSD. A local user can cause a denial of service DoS by disrupting system authentication services. When handling Generic Security Services Application Programming Interface GSSAPI authentication in the Pluggable Authentication Module PAM responder, cached connection state is...

CVE-2026-104042

A flaw was found in sssd. A local attacker can cause a Denial of Service DoS by sending a crafted Pluggable Authentication Module PAM request containing a zero-length authentication token to the responder socket. Due to missing input validation, the service attempts to read beyond buffer boundari...

CVE-2026-104041

A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch NSS responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecke...

CVE-2026-104044

A flaw was found in sssd. A local attacker can trigger a Denial of Service DoS by sending a specially crafted Pluggable Authentication Module PAM request when passkey authentication is enabled. Due to a missing state validation check in passkey Kerberos handling, the PAM responder dereferences an...

CVE-2026-104040

A flaw was found in SSSD. When configured with the Entra ID identity provider, input lookup names containing single quotes are not properly escaped before being included in Microsoft Graph Open Data Protocol OData queries. A low-privileged local user can exploit this flaw by submitting a crafted...

UBUNTU-CVE-2026-104040

A flaw was found in SSSD. When configured with the Entra ID identity provider, input lookup names containing single quotes are not properly escaped before being included in Microsoft Graph Open Data Protocol OData queries. A low-privileged local user can exploit this flaw by submitting a crafted...

UBUNTU-CVE-2026-104042

A flaw was found in sssd. A local attacker can cause a Denial of Service DoS by sending a crafted Pluggable Authentication Module PAM request containing a zero-length authentication token to the responder socket. Due to missing input validation, the service attempts to read beyond buffer boundari...

CVE-2026-104039

A flaw was found in SSSD. A local user can cause a denial of service DoS by disrupting system authentication services. When handling Generic Security Services Application Programming Interface GSSAPI authentication in the Pluggable Authentication Module PAM responder, cached connection state is...

UBUNTU-CVE-2026-104043

A flaw was found in SSSD. A local attacker with access to the Name Service Switch NSS responder UNIX socket can trigger an integer underflow by sending a specially crafted request with an undersized packet header. This issue causes an out-of-bounds memory read during packet parsing, crashing the...

CVE-2026-104043

A flaw was found in SSSD. A local attacker with access to the Name Service Switch NSS responder UNIX socket can trigger an integer underflow by sending a specially crafted request with an undersized packet header. This issue causes an out-of-bounds memory read during packet parsing, crashing the...

UBUNTU-CVE-2026-104041

A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch NSS responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecke...

DEBIAN-CVE-2026-92821

A flaw was found in SSSD. When configured to evaluate password expiration warnings before restrictive access rules in LDAP Lightweight Directory Access Protocol environments, an expired-password warning terminates rule evaluation early and treats the access request as successful. A remote...

CVE-2026-92821

A flaw was found in SSSD. When configured to evaluate password expiration warnings before restrictive access rules in LDAP Lightweight Directory Access Protocol environments, an expired-password warning terminates rule evaluation early and treats the access request as successful. A remote...

DEBIAN-CVE-2026-104036

A flaw was found in SSSD's NFS idmap plugin. When retrieving cached user or group names, the plugin detects if an entry exceeds the destination buffer size but fails to abort before copying data. A local attacker can trigger this vulnerability by requesting identity lookups that resolve to...

DEBIAN-CVE-2026-104034

A flaw was found in SSSD. A use-after-free vulnerability exists in the Kerberos Credential Manager KCM responder during Kerberos ticket-granting ticket TGT renewal, where a deferred callback accesses memory that has already been released. An authenticated local user with a renewable Kerberos tick...

DEBIAN-CVE-2026-104038

A flaw was found in sssd. A remote attacker can cause a denial of service DoS by submitting a certificate that lacks an expected Security Identifier SID extension. In deployments configured with SID-based certificate mapping rules, the service fails to verify the presence of the extension before...

DEBIAN-CVE-2026-104035

A flaw was found in SSSD. An issue in the Kerberos Credential Manager KCM responder allows a local user to cause a Denial of Service DoS by maintaining a persistent connection and repeatedly storing and destroying credentials. Because the service fails to release cached objects from memory when...

DEBIAN-CVE-2026-104033

A flaw was found in SSSD. When configured to enforce account expiration using LDAP Lightweight Directory Access Protocol shadow attributes, SSSD fails to treat an expiration value of zero as an expired account. A user with valid credentials for an expired account can exploit this flaw to bypass...

DEBIAN-CVE-2026-104037

A flaw was found in SSSD. A local attacker can exploit this issue by sending a specially crafted request with an invalid packet length to the autofs responder UNIX socket. This causes an integer underflow and an out-of-bounds memory read, which can crash the responder process and result in a deni...

CVE-2026-104033

A flaw was found in SSSD. When configured to enforce account expiration using LDAP Lightweight Directory Access Protocol shadow attributes, SSSD fails to treat an expiration value of zero as an expired account. A user with valid credentials for an expired account can exploit this flaw to bypass...