Security update for zlib

Announcement ID: SUSE-SU-2026:0783-1
Release Date: 2026-03-03T13:36:31Z
Rating: moderate
References:
Cross-References:
CVSS scores:
  • CVE-2026-27171 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  • CVE-2026-27171 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2026-27171 ( NVD ): 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2026-27171 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • Basesystem Module 15-SP7
  • Development Tools Module 15-SP7
  • openSUSE Leap 15.5
  • openSUSE Leap 15.6
  • SUSE Linux Enterprise Desktop 15 SP7
  • SUSE Linux Enterprise Micro 5.5
  • SUSE Linux Enterprise Real Time 15 SP7
  • SUSE Linux Enterprise Server 15 SP7
  • SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves one vulnerability can now be installed.

Description:

This update for zlib fixes the following issue:

  • CVE-2026-27171: Fixed infinite loop via the crc32_combine64 and crc32_combine_gen64 functions due to missing checks for negative lengths (bsc#1258392).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • Development Tools Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-783=1
  • openSUSE Leap 15.5
    zypper in -t patch SUSE-2026-783=1
  • openSUSE Leap 15.6
    zypper in -t patch openSUSE-SLE-15.6-2026-783=1
  • SUSE Linux Enterprise Micro 5.5
    zypper in -t patch SUSE-SLE-Micro-5.5-2026-783=1
  • Basesystem Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-783=1

Package List:

  • Development Tools Module 15-SP7 (x86_64)
    • zlib-devel-32bit-1.2.13-150500.4.6.1
  • openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64 i586)
    • zlib-devel-static-1.2.13-150500.4.6.1
    • zlib-testsuite-debuginfo-1.2.13-150500.4.6.1
    • libminizip1-debuginfo-1.2.13-150500.4.6.1
    • libminizip1-1.2.13-150500.4.6.1
    • zlib-devel-1.2.13-150500.4.6.1
    • zlib-testsuite-1.2.13-150500.4.6.1
    • libz1-1.2.13-150500.4.6.1
    • zlib-debugsource-1.2.13-150500.4.6.1
    • libz1-debuginfo-1.2.13-150500.4.6.1
    • minizip-devel-1.2.13-150500.4.6.1
  • openSUSE Leap 15.5 (x86_64)
    • libz1-32bit-debuginfo-1.2.13-150500.4.6.1
    • libz1-32bit-1.2.13-150500.4.6.1
    • zlib-devel-static-32bit-1.2.13-150500.4.6.1
    • libminizip1-32bit-debuginfo-1.2.13-150500.4.6.1
    • zlib-devel-32bit-1.2.13-150500.4.6.1
    • libminizip1-32bit-1.2.13-150500.4.6.1
  • openSUSE Leap 15.5 (aarch64_ilp32)
    • libminizip1-64bit-debuginfo-1.2.13-150500.4.6.1
    • libz1-64bit-1.2.13-150500.4.6.1
    • libz1-64bit-debuginfo-1.2.13-150500.4.6.1
    • zlib-devel-64bit-1.2.13-150500.4.6.1
    • zlib-devel-static-64bit-1.2.13-150500.4.6.1
    • libminizip1-64bit-1.2.13-150500.4.6.1
  • openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    • zlib-devel-static-1.2.13-150500.4.6.1
    • zlib-testsuite-debuginfo-1.2.13-150500.4.6.1
    • libminizip1-debuginfo-1.2.13-150500.4.6.1
    • libminizip1-1.2.13-150500.4.6.1
    • zlib-devel-1.2.13-150500.4.6.1
    • zlib-testsuite-1.2.13-150500.4.6.1
    • libz1-1.2.13-150500.4.6.1
    • zlib-debugsource-1.2.13-150500.4.6.1
    • libz1-debuginfo-1.2.13-150500.4.6.1
    • minizip-devel-1.2.13-150500.4.6.1
  • openSUSE Leap 15.6 (x86_64)
    • libz1-32bit-debuginfo-1.2.13-150500.4.6.1
    • libz1-32bit-1.2.13-150500.4.6.1
    • zlib-devel-static-32bit-1.2.13-150500.4.6.1
    • libminizip1-32bit-debuginfo-1.2.13-150500.4.6.1
    • zlib-devel-32bit-1.2.13-150500.4.6.1
    • libminizip1-32bit-1.2.13-150500.4.6.1
  • SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
    • libz1-debuginfo-1.2.13-150500.4.6.1
    • zlib-devel-1.2.13-150500.4.6.1
    • zlib-debugsource-1.2.13-150500.4.6.1
    • libz1-1.2.13-150500.4.6.1
  • Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    • zlib-devel-static-1.2.13-150500.4.6.1
    • libminizip1-debuginfo-1.2.13-150500.4.6.1
    • libminizip1-1.2.13-150500.4.6.1
    • zlib-devel-1.2.13-150500.4.6.1
    • libz1-1.2.13-150500.4.6.1
    • zlib-debugsource-1.2.13-150500.4.6.1
    • libz1-debuginfo-1.2.13-150500.4.6.1
    • minizip-devel-1.2.13-150500.4.6.1
  • Basesystem Module 15-SP7 (x86_64)
    • libz1-32bit-debuginfo-1.2.13-150500.4.6.1
    • libz1-32bit-1.2.13-150500.4.6.1

References: