Heap buffer overflow via span-coordinate truncation
Published Jul 13, 2026 · Updated Jul 13, 2026
Numeric truncation in Samsung Open Source rlottie allows attackers to corrupt heap memory by rendering a crafted Lottie animation. gray_hline stores a scanline Y coordinate in the 16-bit SW_FT_Span.y field after clamping it only to INT_MAX, so narrowing wraps the coordinate before a heap write. Exploitation requires an application to render attacker-supplied animation data at native canvas size and user interaction; corruption can crash the process or alter its execution.
Summary
What happened
Numeric truncation in Samsung Open Source rlottie allows attackers to corrupt heap memory by rendering a crafted Lottie animation. gray_hline stores a scanline Y coordinate in the 16-bit SW_FT_Span.y field after clamping it only to INT_MAX, so narrowing wraps the coordinate before a heap write. Exploitation requires an application to render attacker-supplied animation data at native canvas size and user interaction; corruption can crash the process or alter its execution.
The record
- CVE
- CVE-2026-15551
- Published
- Jul 13, 2026
- Updated
- Jul 13, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-190, CAPEC-100, T1203
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 13, 2026CVE publishedPublication date reported by the CVE source.
- Jul 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
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Attacks
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Technologies
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