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...
CVE-2026-87823 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-87823, released September 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| zstd-jni · opensuse-leap 16.0 | 1.5.7.16-160000.1.1 | OPENSUSE-SU-2026:21902-1 | Sep 21, 2026 |
| zstd-jni · sles 16.0 | 1.5.7.16-160000.1.1 | SUSE-SU-2026:23868-1 | Sep 21, 2026 |
| zstd-jni-java · Debian 14 | 1.5.7-23+ds-1 | DEBIAN-CVE-2026-87823 | Sep 9, 2026 |
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