There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in libsixel 1.8.2 that will cause a denial of service.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade libsixel | Jul 30, 2024 | Nov 30, 2018 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Nov 30, 2018 |
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