Summary
It was discovered that libpng incorrectly handled memory when processing
certain PNG files. If a user or automated system were tricked into opening
a specially crafted PNG file, an attacker could use this issue to cause
libpng to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2026-33416)
It was discovered that libpng incorrectly handled expanding 8-bit paletted
rows to RGB or RGBA on ARM processors. If a user or automated system were
tricked into opening a specially crafted PNG file, an attacker could use
this issue to cause libpng to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2026-33636)
It was discovered that libpng incorrectly handled certain setter APIs. An
attacker could possibly use this issue to obtain sensitive information.
(CVE-2026-34757)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | libpng1.6 | 1.6.37-3ubuntu0.5 |
| Ubuntu · 24.04 LTS 24.04:LTS | libpng1.6 | 1.6.43-5ubuntu0.6 |
| Ubuntu · 25.10 | libpng1.6 | 1.6.50-1ubuntu0.5 |