{"affected":[{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"sssd","product":"Red Hat Enterprise Linux 10","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unknown","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"sssd","product":"Red Hat Enterprise Linux 6","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"sssd","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"sssd","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"sssd","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-8","product":"Red Hat OpenShift Container Platform 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-9","product":"Red Hat OpenShift Container Platform 4","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift/ose-rhel-coreos-9","product":"Red Hat OpenShift Container Platform 5","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-90995","cwes":["CWE-476"],"description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","epss":{"date":"2026-11-05","percentile":0.03026,"score":0.00135},"exploits":[],"kev":null,"metrics":[{"score":5.5,"severity":"medium","source":"CNA: redhat","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793929474448,"publishedAt":1789401332674,"references":[{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-90995"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479464"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"To mitigate this issue, avoid configuring `pam_app_services` in the `[pam]` section of `/etc/sssd/sssd.conf` if it is not operationally required. If `pam_app_services` is configured, remove or comment out the `pam_app_services` line and restart the `sssd` service.\n\nExample:\n```\n# /etc/sssd/sssd.conf\n[pam]\n# pam_app_services = app_svc\n```\n\nAfter modifying the configuration, restart the SSSD service:\n`systemctl restart sssd`\n\nNote that restarting the SSSD service may temporarily interrupt authentication and authorization services."}],"revision":"2b4c1310f4a9eb5a2ebeb1ab8b08dfc115e5f7a6aa5fa672ef0e72b03a6ace0e","sources":[{"modifiedAt":1793929474448,"name":"CNA: redhat","retrievedAt":1793931080006,"url":"https://www.cve.org/CVERecord?id=CVE-2026-90995"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793931086182,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-90995"}],"ssvc":{"assessedAt":1789478726711,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Sssd: sssd: local denial of service due to null pointer dereference in pam responder","updatedAt":1793931086182}