Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 735
Alerts This Week
Warning Icon 1 735

SUSE Linux Micro 6.2 Zlib Moderate Buffer Overflow Fix 2026-21013-1

suse
Calendar Grey April 13, 2026
Dist Suse Esm H88
Update for zlib addresses two issues, including a buffer overflow and infinite loop vulnerability. Install recommended patch now.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for zlib fixes the following issues: * CVE-2026-27171: Fixed an infinite loop via the crc32_combine64 and crc32_combine_gen64 functions due to missing checks for negative lengths. (bsc#1258392) * CVE-2023-45853: Fixed an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_6. (bsc#1216378) ## 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: * SUSE Linux Micro 6.2 zypper in -t patch SUSE-SL-Micro-6.2-502=1 ## Package List: * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64) * zlib-devel-1.2.13-160000.3.1 * libz1-1.2.13-160000.3.1 * zlib-debugsource-1.2.13-160000.3.1

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE zlib infinite loop

References

* bsc#1216378

* bsc#1258392

Cross-

* CVE-2023-45853

* CVE-2026-27171

CVSS scores:

* CVE-2023-45853 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

* CVE-2023-45853 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-45853 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

* 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:

* SUSE Linux Micro 6.2

An update that solves two vulnerabilities can now be installed.

##

Announcement ID: SUSE-SU-2026:21013-1
Release Date: 2026-04-09T11:25:32Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE zlib infinite loop

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.