OPENSUSE-SU-2026:21902-1: zstd-jni security update

OPENSUSE-SU-2026:21902-1, released September 21, 2026, fixes 4 CVEs in zstd-jni (version 1.5.7.16-160000.1.1). None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

n/a

No CVSS score published

Highest EPSS

0.0043

37th percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 0
                                Routine 4

Fixed package versions

Product	Release	Fixed in
zstd-jni	opensuse-leap 16.0	1.5.7.16-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-87823	zstd-jni-java: zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, a...	n/a	0.0043	None reported
Routine	CVE-2026-87824	zstd-jni-java: zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attack...	n/a	0.0039	None reported
Routine	CVE-2026-87877	zstd-jni-java: zstd-jni versions before 1.5.7-14 fail to validate closed state in setDict, setLongMax, setLevel and setRefMultipleDD...	n/a	0.0022	None reported
Routine	CVE-2026-87825	zstd-jni-java: zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's share...	n/a	0.0021	None reported

Also fixes CVE-2026-87823

SUSE-SU-2026:23868-1
zstd-jni on sles 16.0
DEBIAN-CVE-2026-87823
zstd-jni-java on Debian 14

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21902-1

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