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CVE-2026-68743

Medium priority
Needs evaluation

A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-68744

Medium priority
Needs evaluation

A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-68742

Medium priority
Needs evaluation

A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-14476

Medium priority
Needs evaluation

A path traversal flaw was found in SSSD's AD GPO provider. The ad_gpo_extract_smb_components() function does not sanitize .. sequences in the gPCFileSysPath LDAP attribute, allowing an attacker with AD GPO management access to...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-14474

Medium priority
Needs evaluation

A flaw was found in SSSD's LDAP sudo provider. When the ldap_sudo_search_base option is not explicitly configured, SSSD searches the entire LDAP directory tree for sudoRole objects. An authenticated attacker with write access to...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-12610

Medium priority
Needs evaluation

A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-6245

Medium priority
Fixed

A 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...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Fixed Fixed Not affected Not affected Not affected
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CVE-2025-11561

Medium priority
Ignored

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled,...

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Ignored Ignored Ignored Ignored
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CVE-2023-3758

Medium priority

Some fixes available 8 of 10

A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.

1 affected package

sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
sssd Fixed Fixed Fixed Fixed Needs evaluation
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CVE-2023-3326

Low priority
Vulnerable

pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a...

2 affected packages

libpam-krb5, sssd

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libpam-krb5 Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable
sssd Vulnerable Vulnerable Vulnerable Vulnerable Vulnerable
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