CVE-2025-23257: NVIDIA DOCA Privilege Escalation Flaw

CVE-2025-23257 Overview

CVE-2025-23257 is a local privilege escalation vulnerability in the NVIDIA DOCA collectx-clxapidev Debian package. The flaw stems from incorrect permission assignment for a critical resource [CWE-732]. A local actor with low privileges can leverage the misconfiguration to elevate access on affected systems. Successful exploitation may lead to compromised confidentiality, integrity, and availability of the host running DOCA components.

NVIDIA DOCA is the software framework used to program NVIDIA BlueField Data Processing Units (DPUs) and ConnectX SmartNICs, meaning affected systems typically operate in high-value infrastructure roles such as data center offload and network acceleration.

Critical Impact
A local low-privileged attacker can escalate to elevated privileges on hosts running the vulnerable NVIDIA DOCA collectx-clxapidev Debian package, exposing sensitive workloads on BlueField DPU and DOCA-managed systems.

Affected Products

NVIDIA DOCA collectx-clxapidev Debian package
NVIDIA BlueField DPU environments deploying the affected DOCA release
Linux hosts with DOCA CollectX telemetry components installed

Discovery Timeline

2025-09-04 - CVE CVE-2025-23257 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-23257

Vulnerability Analysis

The vulnerability resides in the collectx-clxapidev Debian package shipped with NVIDIA DOCA. The package installs files or directories with permissions that grant broader access than intended. When a privileged process interacts with these resources, a low-privileged user can influence execution paths, configuration, or writable artifacts to gain higher privileges.

The issue is classified under [CWE-732] Incorrect Permission Assignment for Critical Resource. Exploitation requires local access and user interaction, which typically maps to scenarios where a privileged user or service triggers execution against attacker-controlled content. The attack does not cross a trust boundary through the network, but it fully compromises the local host once conditions are met.

Root Cause

The root cause is insecure filesystem permissions on resources shipped or created by the collectx-clxapidev package. Files, directories, or scripts writable by unprivileged users allow tampering with content that is later consumed by higher-privileged DOCA CollectX processes. This breaks the assumption that only privileged accounts can modify components that execute with elevated rights.

Attack Vector

An attacker with an unprivileged local account on a host running the vulnerable DOCA package identifies world-writable resources belonging to collectx-clxapidev. The attacker replaces or modifies these resources so that when a privileged service, scheduled task, or administrator action invokes them, attacker-controlled logic executes with elevated privileges. Because user interaction is required, exploitation often relies on triggering routine administrative workflows or telemetry operations.

No verified public proof-of-concept code is available. Refer to the NVIDIA Support Answer for vendor guidance and the NVD entry for CVE-2025-23257 for authoritative metadata.

Detection Methods for CVE-2025-23257

Indicators of Compromise

Unexpected modification timestamps on files owned by the collectx-clxapidev package under DOCA installation paths
Presence of world-writable files or directories associated with CollectX telemetry components
New or altered binaries, shared libraries, or scripts invoked by DOCA services running as root
Shell histories showing chmod, chown, or file replacements targeting DOCA resources by non-root users

Detection Strategies

Audit filesystem permissions on all files installed by collectx-clxapidev and compare against the vendor-published package manifest
Enable Linux audit rules (auditd) to log writes to DOCA directories and executions performed by DOCA service accounts
Correlate privilege transitions where a process spawned by a DOCA service inherits execution from files recently modified by non-root users

Monitoring Recommendations

Alert on setuid, setgid, or ownership changes applied to DOCA package files after installation
Monitor package integrity using dpkg --verify collectx-clxapidev and flag any mismatches
Forward host telemetry to a centralized data lake to correlate low-privilege user activity with subsequent privileged process execution

How to Mitigate CVE-2025-23257

Immediate Actions Required

Apply the fixed NVIDIA DOCA release as documented in the NVIDIA Support Answer 5655
Inventory all BlueField DPU and DOCA hosts to identify systems running the affected collectx-clxapidev package
Restrict local shell access on DOCA-managed hosts to trusted administrators until patching is complete

Patch Information

NVIDIA has published remediation guidance in its official security bulletin. Administrators should upgrade the collectx-clxapidev package to the fixed version specified in the NVIDIA advisory. Verify installed versions with dpkg -l | grep collectx-clxapidev and confirm the post-patch version matches the vendor-supplied fixed release.

Workarounds

Manually harden filesystem permissions on collectx-clxapidev installation paths to remove world-writable and group-writable bits from files executed by privileged services
Limit membership in groups that own DOCA telemetry directories to service accounts only
Disable the CollectX telemetry components on hosts where they are not operationally required until the patched package can be deployed

bash

# Configuration example: verify and remediate permissions
# Identify installed version
dpkg -l | grep collectx-clxapidev

# Locate package-owned files
dpkg -L collectx-clxapidev

# Verify integrity against the package manifest
sudo dpkg --verify collectx-clxapidev

# Remove world/group write bits from package files (adjust path as needed)
sudo find /opt/mellanox /usr/lib/collectx -xdev \
  \( -perm -o=w -o -perm -g=w \) -exec chmod go-w {} \;