Packages
- libpng1.6 - PNG (Portable Network Graphics) file library
Details
It was discovered that libpng incorrectly handled memory when processing
certain PNG files, which could result in an out-of-bounds memory access.
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. (CVE-2025-64505)
It was discovered that libpng incorrectly handled memory when processing
8-bit images through the simplified write API with 'convert_to_8bit'
enabled, which could result in an out-of-bounds memory access. If a user
or automated system were tricked into opening a specially crafted 8-bit
PNG file, an attacker could use this issue to cause libpng to crash,
resulting in a denial of service. (CVE-2025-64506)
It was discovered that libpng incorrectly handled memory when processing
palette images with...
It was discovered that libpng incorrectly handled memory when processing
certain PNG files, which could result in an out-of-bounds memory access.
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. (CVE-2025-64505)
It was discovered that libpng incorrectly handled memory when processing
8-bit images through the simplified write API with 'convert_to_8bit'
enabled, which could result in an out-of-bounds memory access. If a user
or automated system were tricked into opening a specially crafted 8-bit
PNG file, an attacker could use this issue to cause libpng to crash,
resulting in a denial of service. (CVE-2025-64506)
It was discovered that libpng incorrectly handled memory when processing
palette images with 'PNG_FLAG_OPTIMIZE_ALPHA' enabled, which could result
in an out-of-bounds memory access. 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.
(CVE-2025-64720)
It was discovered that libpng incorrectly handled memory when processing
6-bit interlaced PNGs with 8-bit output format, which could result in an
out-of-bounds memory access. 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.
(CVE-2025-65018)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 25.10 questing | libpng16-16t64 – 1.6.50-1ubuntu0.1 | ||
| 25.04 plucky | libpng16-16t64 – 1.6.47-1.1ubuntu0.1 | ||
| 24.04 LTS noble | libpng16-16t64 – 1.6.43-5ubuntu0.1 | ||
| 22.04 LTS jammy | libpng16-16 – 1.6.37-3ubuntu0.1 | ||
| 20.04 LTS focal | libpng16-16 – 1.6.37-2ubuntu0.1~esm1 | ||
| 18.04 LTS bionic | libpng16-16 – 1.6.34-1ubuntu0.18.04.2+esm1 | ||
| 16.04 LTS xenial | libpng16-16 – 1.6.20-2ubuntu0.1~esm2 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.