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Bugs fixes in "libpng1.6"

Origin Bug number Title Date fixed
CVE CVE-2019-7317 png_image_free in png.c in libpng 1.6.36 has a use-after-free because png_image_free_function is called under png_safe_execute. 2019-04-30
CVE CVE-2019-7317 png_image_free in png.c in libpng 1.6.36 has a use-after-free because png_image_free_function is called under png_safe_execute. 2019-04-30
CVE CVE-2018-13785 In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant 2018-07-11
CVE CVE-2018-13785 In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant 2018-07-11



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