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sssd

A vulnerability in sssd allows a local attacker to cause a Denial of Service (DoS) by sending a crafted PAM request with a zero-length authentication token. The flaw is due to missing input validation, leading to out-of-bounds reads and a crash of the PAM responder. This issue affects multiple specific versions of sssd. The CVSS score is 5.5, indicating a medium severity impact focused on availability disruption.

CVE-2026-104042 is a vulnerability in sssd where a local attacker can trigger a Denial of Service by sending a specially crafted Pluggable Authentication Module (PAM) request containing a zero-length authentication token to the responder socket. The lack of input validation causes the service to read beyond buffer boundaries, crashing the PAM responder. This vulnerability affects numerous specific sssd versions as listed. The CVSS 3.1 base score is 5.5 with vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, indicating local attack vector, low complexity, requiring low privileges, no user interaction, unchanged scope, no confidentiality or integrity impact, but high impact on availability.

A vulnerability in sssd allows a local attacker to cause a Denial of Service (DoS) by sending a crafted PAM request with a zero-length authentication token. The flaw is due to missing input validation, leading to out-of-bounds reads and a crash of the PAM responder. This issue affects multiple speci

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… (CVE-2026-104042)

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