Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-70841.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-70841
Upstream
Published
2025-11-25T00:15:47Z
Modified
2026-04-01T05:22:30.352085Z
Summary
CVE-2025-64506 affecting package fltk 1.3.8-1
Details

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read vulnerability exists in libpng's pngwriteimage8bit function when processing 8-bit images through the simplified write API with convertto_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This issue has been patched in version 1.6.51.

References

Affected packages

Azure Linux:3 / fltk

Package

Name
fltk
Purl
pkg:rpm/azure-linux/fltk

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
1.3.8-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-70841.json"