An update for libpng is now available for openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-2149 Final 1.0 1.0 2026-05-03 Initial 2026-05-03 2026-05-03 openEuler SA Tool V1.0 2026-05-03 libpng security update An update for libpng is now available for openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3 The libpng package contains libraries used by other programs for reading and writing PNG format files. The PNG format was designed as a replacement for GIF and, to a lesser extent, TIFF, with many improvements and extensions and lack of patent problems. Security Fix(es): LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.0.9 to before 1.6.57, passing a pointer obtained from png_get_PLTE, png_get_tRNS, or png_get_hIST back into the corresponding setter on the same png_struct/png_info pair causes the setter to read from freed memory and copy its contents into the replacement buffer. The setter frees the internal buffer before copying from the caller-supplied pointer, which now dangles. The freed region may contain stale data (producing silently corrupted chunk metadata) or data from subsequent heap allocations (leaking unrelated heap contents into the chunk struct). This vulnerability is fixed in 1.6.57.(CVE-2026-34757) An update for libpng is now available for openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3. openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Medium libpng https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2149 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-34757 https://nvd.nist.gov/vuln/detail/CVE-2026-34757 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 libpng-1.6.37-8.oe2003sp4.x86_64.rpm libpng-debuginfo-1.6.37-8.oe2003sp4.x86_64.rpm libpng-debugsource-1.6.37-8.oe2003sp4.x86_64.rpm libpng-devel-1.6.37-8.oe2003sp4.x86_64.rpm libpng-help-1.6.37-8.oe2003sp4.x86_64.rpm libpng-1.6.38-9.oe2203sp4.x86_64.rpm libpng-debuginfo-1.6.38-9.oe2203sp4.x86_64.rpm libpng-debugsource-1.6.38-9.oe2203sp4.x86_64.rpm libpng-devel-1.6.38-9.oe2203sp4.x86_64.rpm libpng-help-1.6.38-9.oe2203sp4.x86_64.rpm libpng-static-1.6.38-9.oe2203sp4.x86_64.rpm libpng-tools-1.6.38-9.oe2203sp4.x86_64.rpm libpng-1.6.40-9.oe2403.x86_64.rpm libpng-debuginfo-1.6.40-9.oe2403.x86_64.rpm libpng-debugsource-1.6.40-9.oe2403.x86_64.rpm libpng-devel-1.6.40-9.oe2403.x86_64.rpm libpng-static-1.6.40-9.oe2403.x86_64.rpm libpng-tools-1.6.40-9.oe2403.x86_64.rpm libpng-1.6.40-9.oe2403sp1.x86_64.rpm libpng-debuginfo-1.6.40-9.oe2403sp1.x86_64.rpm libpng-debugsource-1.6.40-9.oe2403sp1.x86_64.rpm libpng-devel-1.6.40-9.oe2403sp1.x86_64.rpm libpng-static-1.6.40-9.oe2403sp1.x86_64.rpm libpng-tools-1.6.40-9.oe2403sp1.x86_64.rpm libpng-1.6.40-9.oe2403sp3.x86_64.rpm libpng-debuginfo-1.6.40-9.oe2403sp3.x86_64.rpm libpng-debugsource-1.6.40-9.oe2403sp3.x86_64.rpm libpng-devel-1.6.40-9.oe2403sp3.x86_64.rpm libpng-static-1.6.40-9.oe2403sp3.x86_64.rpm libpng-tools-1.6.40-9.oe2403sp3.x86_64.rpm libpng-help-1.6.40-9.oe2403.noarch.rpm libpng-help-1.6.40-9.oe2403sp1.noarch.rpm libpng-help-1.6.40-9.oe2403sp3.noarch.rpm libpng-1.6.37-8.oe2003sp4.aarch64.rpm libpng-debuginfo-1.6.37-8.oe2003sp4.aarch64.rpm libpng-debugsource-1.6.37-8.oe2003sp4.aarch64.rpm libpng-devel-1.6.37-8.oe2003sp4.aarch64.rpm libpng-help-1.6.37-8.oe2003sp4.aarch64.rpm libpng-1.6.38-9.oe2203sp4.aarch64.rpm libpng-debuginfo-1.6.38-9.oe2203sp4.aarch64.rpm libpng-debugsource-1.6.38-9.oe2203sp4.aarch64.rpm libpng-devel-1.6.38-9.oe2203sp4.aarch64.rpm libpng-help-1.6.38-9.oe2203sp4.aarch64.rpm libpng-static-1.6.38-9.oe2203sp4.aarch64.rpm libpng-tools-1.6.38-9.oe2203sp4.aarch64.rpm libpng-1.6.40-9.oe2403.aarch64.rpm libpng-debuginfo-1.6.40-9.oe2403.aarch64.rpm libpng-debugsource-1.6.40-9.oe2403.aarch64.rpm libpng-devel-1.6.40-9.oe2403.aarch64.rpm libpng-static-1.6.40-9.oe2403.aarch64.rpm libpng-tools-1.6.40-9.oe2403.aarch64.rpm libpng-1.6.40-9.oe2403sp1.aarch64.rpm libpng-debuginfo-1.6.40-9.oe2403sp1.aarch64.rpm libpng-debugsource-1.6.40-9.oe2403sp1.aarch64.rpm libpng-devel-1.6.40-9.oe2403sp1.aarch64.rpm libpng-static-1.6.40-9.oe2403sp1.aarch64.rpm libpng-tools-1.6.40-9.oe2403sp1.aarch64.rpm libpng-1.6.40-9.oe2403sp3.aarch64.rpm libpng-debuginfo-1.6.40-9.oe2403sp3.aarch64.rpm libpng-debugsource-1.6.40-9.oe2403sp3.aarch64.rpm libpng-devel-1.6.40-9.oe2403sp3.aarch64.rpm libpng-static-1.6.40-9.oe2403sp3.aarch64.rpm libpng-tools-1.6.40-9.oe2403sp3.aarch64.rpm libpng-1.6.37-8.oe2003sp4.src.rpm libpng-1.6.38-9.oe2203sp4.src.rpm libpng-1.6.40-9.oe2403.src.rpm libpng-1.6.40-9.oe2403sp1.src.rpm libpng-1.6.40-9.oe2403sp3.src.rpm LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.0.9 to before 1.6.57, passing a pointer obtained from png_get_PLTE, png_get_tRNS, or png_get_hIST back into the corresponding setter on the same png_struct/png_info pair causes the setter to read from freed memory and copy its contents into the replacement buffer. The setter frees the internal buffer before copying from the caller-supplied pointer, which now dangles. The freed region may contain stale data (producing silently corrupted chunk metadata) or data from subsequent heap allocations (leaking unrelated heap contents into the chunk struct). This vulnerability is fixed in 1.6.57. 2026-05-03 CVE-2026-34757 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 Medium 5.1 AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N libpng security update 2026-05-03 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2149