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  <update from="huaweicloud.com" type="security" status="stable" version="1">
    <id>HCE2-SA-2026-0071</id>
    <title>An update for libpng is now available for HCE 2.0</title>
    <severity>Important</severity>
    <release>HCE 2.0</release>
    <issued date="2026-03-23 23:18:31"/>
    <updated date="2026-03-23 23:18:31"/>
    <references>
      <reference href="https://nvd.nist.gov/vuln/detail/CVE-2026-22695" id="CVE-2026-22695" title="CVE-2026-22695 Base Score: 7.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H" type="cve"/>
      <reference href="https://nvd.nist.gov/vuln/detail/CVE-2025-28164" id="CVE-2025-28164" title="CVE-2025-28164 Base Score: 5.5 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H" type="cve"/>
      <reference href="https://nvd.nist.gov/vuln/detail/CVE-2026-22801" id="CVE-2026-22801" title="CVE-2026-22801 Base Score: 7.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H" type="cve"/>
      <reference href="https://nvd.nist.gov/vuln/detail/CVE-2026-25646" id="CVE-2026-25646" title="CVE-2026-25646 Base Score: 8.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H" type="cve"/>
      <reference href="https://nvd.nist.gov/vuln/detail/CVE-2025-28162" id="CVE-2025-28162" title="CVE-2025-28162 Base Score: 5.5 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H" type="cve"/>
    </references>
    <description>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 1.6.51 to 1.6.53, there is a heap buffer over-read in the libpng simplified API function png_image_finish_read when processing interlaced 16-bit PNGs with 8-bit output format and non-minimal row stride. This is a regression introduced by the fix for CVE-2025-65018. This vulnerability is fixed in 1.6.54. (CVE-2026-22695)

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via png_create_read_struct() function. (CVE-2025-28164)

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54. (CVE-2026-22801)

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_x27;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. (CVE-2026-25646)

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via the pngimage with AddressSanitizer (ASan), the program leaks memory in various locations, eventually leading to high memory usage and causing the program to become unresponsive (CVE-2025-28162)
</description>
    <pkglist>
      <collection short="HCE 2.0" package="libpng">
        <name>HCE 2.0</name>
        <package arch="x86_64" name="libpng" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-1.6.37-2.r7.hce2.x86_64.rpm</filename>
        </package>
        <package arch="x86_64" name="libpng-devel" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-devel-1.6.37-2.r7.hce2.x86_64.rpm</filename>
        </package>
        <package arch="x86_64" name="libpng-help" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-help-1.6.37-2.r7.hce2.x86_64.rpm</filename>
        </package>
        <package arch="x86_64" name="libpng-static" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-static-1.6.37-2.r7.hce2.x86_64.rpm</filename>
        </package>
        <package arch="x86_64" name="libpng-tools" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-tools-1.6.37-2.r7.hce2.x86_64.rpm</filename>
        </package>
        <package arch="aarch64" name="libpng" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-1.6.37-2.r7.hce2.aarch64.rpm</filename>
        </package>
        <package arch="aarch64" name="libpng-devel" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-devel-1.6.37-2.r7.hce2.aarch64.rpm</filename>
        </package>
        <package arch="aarch64" name="libpng-help" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-help-1.6.37-2.r7.hce2.aarch64.rpm</filename>
        </package>
        <package arch="aarch64" name="libpng-static" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-static-1.6.37-2.r7.hce2.aarch64.rpm</filename>
        </package>
        <package arch="aarch64" name="libpng-tools" version="1.6.37" release="2.r7.hce2">
          <filename>libpng-tools-1.6.37-2.r7.hce2.aarch64.rpm</filename>
        </package>
      </collection>
    </pkglist>
  </update>
