Memory corruption in FastRPC INIT & multimode IOCTL calls
CVE-2025-21485 Published on June 3, 2025

Time-of-check Time-of-use (TOCTOU) Race Condition in DSP Service
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.

NVD

Vulnerability Analysis

CVE-2025-21485 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a TOCTTOU Vulnerability?

The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state. This weakness can be security-relevant when an attacker can influence the state of the resource between check and use. This can happen with shared resources such as files, memory, or even variables in multithreaded programs.

CVE-2025-21485 has been classified to as a TOCTTOU vulnerability or weakness.


Products Associated with CVE-2025-21485

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Google Android
 
Qualcomm Snapdragon
 

Affected Versions

Qualcomm, Inc. Snapdragon:

Exploit Probability

EPSS
0.05%
Percentile
16.42%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.