This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-104042 →
DEBIAN-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 cont...
Original description
The description as published by the source.
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 boundaries when processing the token, causing the PAM responder to crash.
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