zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing

Are you affected?

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• Debian:12 zstd-jni-java1.5.2-5+ds-3, 1.5.2-5+ds-4, 1.5.2-5+ds-5
• Debian:13 zstd-jni-java1.5.2-5+ds-7, 1.5.2-5+ds-8, 1.5.4-2+ds-1
• Debian:14 zstd-jni-java0 → 1.5.7-23+ds-1

How to fix CVE-2026-87823

• Recommended remediation

  A patch or advisory reference is linked. Open the original publisher for availability by product version.

• Official advisories

  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • Trivy Vulnerability DB · osv.dev

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Sep 9, 2026 · Trivy Vulnerability DB

   Detected

   zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.

2. Oct 18, 2026 · Trivy Vulnerability DB

   Fix available

   zstd-jni-java fixed in 1.5.7-23+ds-1

3. Oct 18, 2026 · Trivy Vulnerability DB

   Fix available

   zstd-jni-java fixed in 1.5.7-23+ds-1

4. Oct 18, 2026 · Trivy Vulnerability DB

   Updated

   zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.

Sources

• CVE.orgVulnerability recordCVE-2026-87823

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-87823

  30-day exploitation probability 0.4%

  first.org
• Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-87823

  zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory,

  osv.dev

References

• ADVISORY · security-tracker.debian.org

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.