# Security update for zstd-jni
Announcement ID: SUSE-SU-2026:23858-1
Release Date: 2026-09-21T17:44:10Z
Rating: important
References:
* bsc#1279953
* bsc#1279954
* bsc#1279955
* bsc#1279956
Cross-References:
* CVE-2026-87823
* CVE-2026-87824
* CVE-2026-87825
* CVE-2026-87877
CVSS scores:
* CVE-2026-87823 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
* CVE-2026-87823 ( NVD ): 8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/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-2026-87823 ( NVD ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
* CVE-2026-87824 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-87824 ( NVD ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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-2026-87824 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-87825 ( SUSE ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
* CVE-2026-87825 ( NVD ): 7.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/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-2026-87825 ( NVD ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
* CVE-2026-87877 ( SUSE ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
* CVE-2026-87877 ( NVD ): 7.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/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-2026-87877 ( NVD ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected Products:
* SUSE Linux Enterprise Server 16.0
An update that solves four vulnerabilities can now be installed.
## Description:
This update for zstd-jni fixes the following issues:
* CVE-2026-87823: denial of Service or Information Disclosure via out-of-
bounds read (bsc#1279953).
* CVE-2026-87824: denial of Service (DoS) via out-of-bounds read in
Zstd.trainFromBufferDirect (bsc#1279956).
* CVE-2026-87825: use-after-free resulting in silent data corruption or JVM
crashes (bsc#1279955).
* CVE-2026-87877: use-After-Free vulnerability allows memory corruption and
denial of service (bsc#1279954).
Changes for zstd-jni:
* update to version v1.5.7.16.
## 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 Enterprise Server 16.0
zypper in -t patch SUSE-SLES-16.0-1730
## Package List:
* SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
* zstd-jni-1.5.7.16-160000.1.1
## References:
* https://www.suse.com/security/cve/CVE-2026-87823.html
* https://www.suse.com/security/cve/CVE-2026-87824.html
* https://www.suse.com/security/cve/CVE-2026-87825.html
* https://www.suse.com/security/cve/CVE-2026-87877.html
* https://bugzilla.suse.com/show_bug.cgi?id=1279953
* https://bugzilla.suse.com/show_bug.cgi?id=1279954
* https://bugzilla.suse.com/show_bug.cgi?id=1279955
* https://bugzilla.suse.com/show_bug.cgi?id=1279956
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