This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-80048 →

UBUNTU-CVE-2026-80048

A flaw was found in `sssd-kcm`. A local user or process able to connect to the `sssd-kcm` UNIX socket can exploit this vulnerability. By sending a lar...

Original description

The description as published by the source.

A flaw was found in sssd-kcm. A local user or process able to connect to the sssd-kcm UNIX socket can exploit this vulnerability. By sending a large request length header and then stalling the connection, an attacker can cause the system to preallocate significant memory. This leads to memory exhaustion within the sssd-kcm responder, resulting in a Denial of Service (DoS) for affected deployments.

Source: OSV.dev (Open Source Vulnerabilities) OSV