CVE-2025-29933 in μProf
Summary
by MITRE • 11/24/2025
Improper input validation within AMD uProf can allow a local attacker to write out of bounds, potentially resulting in a crash or denial of service
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Analysis
by VulDB Data Team • 11/25/2025
The vulnerability identified as CVE-2025-29933 resides within AMD uProf, a profiling tool designed for monitoring and analyzing system performance on AMD processors. This tool operates at a low level within the system architecture, making it a critical component for both legitimate performance analysis and potential attack vectors. The flaw manifests in the input validation mechanisms that govern how uProf processes user-provided data, specifically when handling profiling data or configuration parameters. The improper validation allows an attacker to craft malicious inputs that bypass normal safety checks, creating conditions where memory operations can occur beyond allocated boundaries.
This out-of-bounds write vulnerability represents a fundamental breakdown in the software's defensive programming practices, where the system fails to properly verify input length, format, or content before processing. The technical implementation appears to lack adequate bounds checking routines, particularly when dealing with buffer operations or data structures that require precise memory management. Such deficiencies are commonly classified under CWE-129, which addresses insufficient validation of length of inputs, and may also align with CWE-787, concerning out-of-bounds write conditions. The vulnerability operates at the kernel level or system-level privileges, making it particularly dangerous as it can be exploited by local attackers who already have system access.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, potentially enabling more sophisticated attacks that could compromise system stability or availability. When an out-of-bounds write occurs, it can corrupt adjacent memory locations, leading to unpredictable behavior including system crashes, application failures, or even potential privilege escalation if the corrupted memory affects critical system structures. The local nature of the attack means that exploitation requires only user-level access, making it particularly concerning for environments where multiple users share the same system or where privilege separation is not properly enforced. Attackers could leverage this vulnerability to cause persistent system instability, making it difficult to maintain reliable service availability.
Mitigation strategies for CVE-2025-29933 should focus on immediate input validation improvements within the uProf component, including implementing comprehensive bounds checking and sanitization routines for all user-provided inputs. The system should employ stack canaries, address space layout randomization, and other exploit mitigation techniques to reduce the effectiveness of potential exploitation attempts. Organizations should also consider implementing runtime monitoring to detect anomalous memory access patterns that might indicate exploitation attempts. From an ATT&CK perspective, this vulnerability aligns with techniques such as T1059 for command and scripting interpreter usage and T1499 for endpoint denial of service, particularly when considering the potential for persistent system instability. Regular updates and patches from AMD should be prioritized, while system administrators should monitor for any signs of exploitation attempts through log analysis and behavioral monitoring of system profiling activities.