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CVE-2026-104034

Medium priority
Needs evaluation

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...

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-2026-104030

Medium priority
Needs evaluation

A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitting a specially crafted passkey authentication token that lacks null terminators. The authentication service reads past...

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-2026-90462

Medium priority
Needs evaluation

A flaw was found in SSSD. When configured with the LDAP access provider and `ldap_access_order` including `ppolicy` or `lockout`, a fail-open condition in the LDAP ppolicy access check can occur if a user lookup returns...

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-2026-90996

Medium priority
Needs evaluation

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS...

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-2026-90995

Medium priority
Needs evaluation

A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the...

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-2026-90994

Medium priority
Needs evaluation

A flaw was found in sssd, specifically within the PAM (Pluggable Authentication Modules) responder's protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder's UNIX socket can exploit this by...

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-2026-90463

Medium priority
Needs evaluation

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This...

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-2026-87853

Medium priority
Needs evaluation

A flaw was found in SSSD's IdP authentication provider. The eval_access_token_buf() function compares the OIDC subject identifier using strncmp() with the authenticated user's identifier length, performing a prefix comparison...

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-2026-68743

Medium priority
Fixed

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 Fixed Fixed Fixed Fixed Fixed
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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
Show less packages