---
id: CVE-2026-80048
title: A flaw was found in `sssd-kcm`
summary: >-
  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 sy…
severity: none
cwe:
  - CWE-770
vendor: Red Hat
product: sssd
affected:
  - sssd (all versions)
  - sssd
  - sssd (all versions)
  - sssd (all versions)
  - sssd (all versions)
  - openshift/ose-rhel-coreos-8 (all versions)
  - openshift/ose-rhel-coreos-9 (all versions)
published: '2026-10-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T00:17:21.067'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80048'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80048'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2479377'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-07T00:26:32.093Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.