lz4-java: yawkat LZ4 Java provides LZ4 compression for Java
CVE-2026-106452 is fixed in lz4-java on 1 platform by DEBIAN-CVE-2026-106452 (version 1.11.2+ds1-1), released October 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.
yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but allocates a compressed-input buffer of that attacker-controlled size before reading payload data, allowing a header-only stream to request a near-2 GiB allocation and exhaust the JVM heap. Canonical writers emit raw blocks when compression is not smaller than the original block, but vulnerable readers accept non-canonical oversized compressed blocks. This issue is fixed in version 1.11.2.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| lz4-java · Debian 14 | 1.11.2+ds1-1 | DEBIAN-CVE-2026-106452 | Oct 7, 2026 |
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