High severity security fix.
https://sourceforge.net/p/libpng/code/ci/libpng16/tree/CHANGES

Plugs CVE:
CVE-2026-25646: Heap buffer overflow in png_set_quantize.

Signed-off-by: Christian Melki <[email protected]>
---
 rules/libpng.make | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rules/libpng.make b/rules/libpng.make
index f69de3e08..8cdfacf64 100644
--- a/rules/libpng.make
+++ b/rules/libpng.make
@@ -16,8 +16,8 @@ PACKAGES-$(PTXCONF_LIBPNG) += libpng
 #
 # Paths and names
 #
-LIBPNG_VERSION := 1.6.54
-LIBPNG_MD5     := ba9e86853c794d111398b66a42bfa0dc
+LIBPNG_VERSION := 1.6.55
+LIBPNG_MD5     := bc950b5a06ec1028285e14a127f6fb6e
 LIBPNG         := libpng-$(LIBPNG_VERSION)
 LIBPNG_SUFFIX  := tar.xz
 LIBPNG_URL     := $(call ptx/mirror, SF, libpng/$(LIBPNG).$(LIBPNG_SUFFIX))
-- 
2.43.0


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