This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-87824 →

UBUNTU-CVE-2026-87824

zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundarie...

Original description

The description as published by the source.

zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:24.04:LTS zstd-jni-java

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.10 zstd-jni-java

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS zstd-jni-java

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

report ubuntu.com
report cve.org
report github.com