CVE catalog
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 boundaries by supplying oversized per-sample lengths. Attac
- Severity
- High · CVSS 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 - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | zstd-jni-java | sid | 1.5.7-23+ds-2 | fixed |
| Debian | zstd-jni-java | forky | 1.5.7-23+ds-2 | fixed |
| Debian | zstd-jni-java | trixie | 1.5.2-5+ds-7 | vulnerable |
| Debian | zstd-jni-java | bookworm | 1.5.2-5+ds-3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | zstd-jni-java | source | sid | 1.5.7-23+ds-1 | not yet assigned | Not reported | [1147397] |
| Debian | zstd-jni-java | source | forky | 1.5.7-23+ds-1 | not yet assigned | Not reported | [1147397] |
| Debian | zstd-jni-java | source | trixie | (unfixed) | not yet assigned | Not reported | [1147397] |
| Debian | zstd-jni-java | source | bookworm | (unfixed) | not yet assigned | Not reported | [1147397] |
Notes
[trixie] zstd-jni-java: Minor issue [bookworm] zstd-jni-java: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libzstd-jni1]Affected
Source package: [zstd-jni-java]
Details (2)
1.5.2-5+ds-3· amd64 · bookwormAffected
nvd · zstd-jni-java · debian · bookworm; nvd · zstd-jni-java · debian · 12
1.5.2-5+ds-3· arm64 · bookwormAffected
nvd · zstd-jni-java · debian · bookworm; nvd · zstd-jni-java · debian · 12
- [libzstd-jni-java]Affected
Source package: [zstd-jni-java]
Details (2)
1.5.2-5+ds-3· all · bookwormAffected
nvd · zstd-jni-java · debian · bookworm; nvd · zstd-jni-java · debian · 12
1.5.2-5+ds-3· all · bookwormAffected
nvd · zstd-jni-java · debian · bookworm; nvd · zstd-jni-java · debian · 12
[Debian 13 (Trixie)]
- [libzstd-jni1]Affected
Source package: [zstd-jni-java]
Details (2)
1.5.2-5+ds-7· amd64 · trixieAffected
nvd · zstd-jni-java · debian · 13
1.5.2-5+ds-7· arm64 · trixieAffected
nvd · zstd-jni-java · debian · 13
- [libzstd-jni-java]Affected
Source package: [zstd-jni-java]
Details (2)
1.5.2-5+ds-7· all · trixieAffected
nvd · zstd-jni-java · debian · 13
1.5.2-5+ds-7· all · trixieAffected
nvd · zstd-jni-java · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_23858-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-87824]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-87824]
- [https://security-tracker.debian.org/tracker/CVE-2026-87824]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87824.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3791.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]