Unrated severityNVD Advisory· Published Feb 10, 2026· Updated Feb 11, 2026
LIBPNG has a heap buffer overflow in png_set_quantize
CVE-2026-25646
Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.55, an out-of-bounds read vulnerability exists in the png_set_quantize() API function. When the function is called with no histogram and the number of colors in the palette is more than twice the maximum supported by the user's display, certain palettes will cause the function to enter into an infinite loop that reads past the end of an internal heap-allocated buffer. The images that trigger this vulnerability are valid per the PNG specification. This vulnerability is fixed in 1.6.55.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
47- osv-coords45 versionspkg:rpm/almalinux/libpngpkg:rpm/almalinux/libpng12pkg:rpm/almalinux/libpng15pkg:rpm/almalinux/libpng-develpkg:rpm/almalinux/mingw32-libpngpkg:rpm/almalinux/mingw32-libpng-staticpkg:rpm/almalinux/mingw64-libpngpkg:rpm/almalinux/mingw64-libpng-staticpkg:rpm/opensuse/libpng12&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/libpng16&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/libpng16&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/libpng16&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.2
< 2:1.6.37-12.el9_7.2+ 44 more
- (no CPE)range: < 2:1.6.37-12.el9_7.2
- (no CPE)range: < 1.2.57-6.el8_10
- (no CPE)range: < 1.5.30-14.el9_7.1
- (no CPE)range: < 2:1.6.37-12.el9_7.2
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.6.34-2.el8_10
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.44-160000.5.1
- (no CPE)range: < 1.6.55-1.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.50-20.9.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.57-150000.4.6.1
- (no CPE)range: < 1.2.50-20.9.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.8-15.18.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.34-150000.3.19.1
- (no CPE)range: < 1.6.40-150600.3.12.1
- (no CPE)range: < 1.6.8-15.18.1
- (no CPE)range: < 1.6.43-3.1
- (no CPE)range: < 1.6.43-slfo.1.1_3.1
- (no CPE)range: < 1.6.44-160000.5.1
Patches
Vulnerability mechanics
References
2- github.com/pnggroup/libpng/commit/01d03b8453eb30ade759cd45c707e5a1c7277d88mitrex_refsource_MISC
- github.com/pnggroup/libpng/security/advisories/GHSA-g8hp-mq4h-rqm3mitrex_refsource_CONFIRM
News mentions
0No linked articles in our index yet.