Integer Overflow in Samsung Open Source rlottie

Executive Summary

The CVE-2026-15551 vulnerability is a heap buffer overflow issue in the Samsung rlottie library. It occurs because the Y coordinate in the SW_FT_Span struct is stored as a 16-bit short data type without proper clamping to prevent overflow. This allows the Y coordinate value to exceed the 16-bit limit, causing it to be truncated and leading to a heap buffer overflow.

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Impact Analysis

This vulnerability can lead to a heap buffer overflow, which may cause application crashes or potentially allow an attacker to execute arbitrary code with limited privileges. The CVSS score indicates a moderate severity with possible impacts on confidentiality, integrity, and high impact on availability.

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Detection Guidance

The vulnerability involves a heap buffer overflow in the rlottie library due to improper handling of the Y coordinate in the SW_FT_Span struct. Detection would require analyzing the usage of rlottie in your system and monitoring for abnormal behavior or crashes related to rendering operations that use this library.

There are no specific commands provided in the available resources to detect this vulnerability directly on your network or system.

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Mitigation Strategies

To mitigate this vulnerability, you should update the rlottie library to a version that includes the fix ensuring proper clamping of the Y coordinate to prevent heap buffer overflow.

If an immediate update is not possible, consider restricting or monitoring the use of rlottie in your environment to prevent exploitation, and apply any available patches or workarounds provided by Samsung or the rlottie maintainers.

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