Bug 2538314 (CVE-2026-83603) - CVE-2026-83603 netdata: Netdata: Local Root Privilege Escalation via ndsudo and fail2ban-client arbitrary socket path
Summary: CVE-2026-83603 netdata: Netdata: Local Root Privilege Escalation via ndsudo a...
Keywords:
Status: NEW
Alias: CVE-2026-83603
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2539366
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 18:02 UTC by OSIDB Bzimport
Modified: 2026-09-23 11:42 UTC (History)
0 users

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Description OSIDB Bzimport 2026-09-22 18:02:59 UTC 
Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.
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