Back Linuxsecurity SUSE zchunk Update Fixes Crashes Caused by Crafted Files
Critical WordPress Flaw Exploited in the Wild: Learn how to protect your site and check your core update window. ×
## This update for zchunk fixes the following issue: * CVE-2026-117556: heap out-of-bounds read in `read_preface()` allows attackers to cause an application crash via a crafted `.zck` file (bsc#1288144). ## 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-6.2-2064 ## Package List: * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64) * zchunk-debuginfo-1.5.1-160000.3.1 * libzck1-1.5.1-160000.3.1 * libzck1-debuginfo-1.5.1-160000.3.1 * zchunk-debugsource-1.5.1-160000.3.1
## This update for zchunk fixes the following issue: * CVE-2026-117556: heap out-of-bounds read in `read_preface()` allows attackers to cause an application crash via a crafted `.zck` file (bsc#1288144). ## 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-6.2-2064 ## Package List: * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64) * zchunk-debuginfo-1.5.1-160000.3.1 * libzck1-1.5.1-160000.3.1 * libzck1-debuginfo-1.5.1-160000.3.1 * zchunk-debugsource-1.5.1-160000.3.1
* CVE-2026-117556 ( SUSE ): 6.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-117556 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
* CVE-2026-117556 ( NVD ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-117556 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
* SUSE Linux Micro 6.2
An update that solves one vulnerability can now be installed.
*
*
Announcement ID: SUSE-SU-2026:24640-1 Release Date: 2026-11-06T13:41:14Z Rating: moderate
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
