This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-68743 →

DEBIAN-CVE-2026-68743

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 b...

Original description

The description as published by the source.

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 protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 sssd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 sssd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org