Bug 2416904 (CVE-2025-64720) - CVE-2025-64720 libpng: LIBPNG buffer overflow
Summary: CVE-2025-64720 libpng: LIBPNG buffer overflow
Keywords:
Status: NEW
Alias: CVE-2025-64720
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2417401 2417402 2417403 2417404 2417405 2417406 2417408 2417411 2417414 2417418 2417420 2417424 2417426 2417429 2417434 2417436 2417439 2417441 2417443 2417447 2417450 2417454 2417457 2417461 2417464 2417467 2417469 2417472 2417476
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-11-25 00:01 UTC by OSIDB Bzimport
Modified: 2025-11-27 00:49 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2025-11-25 00:01:18 UTC 
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, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.
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