| Package | Affected versions | Patched versions |
|---|---|---|
| clickhouse | < 21.10.2.15 | 21.10.2.15 |
Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 16-bit unsigned user-supplied value ('offset') is read from the compressed data. The offset is later used in the length of a copy operation, without checking the upper bounds of the source of the copy operation.
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