snappy-java's Integer Overflow vulnerability in shuffle leads to DoS
Published Jun 15, 2023 · Updated Oct 23, 2026 · Also known as GHSA-pqr6-cmr2-h8hf
Original summary
Normalized public record · Updated Oct 23, 2026
snappy-java's Integer Overflow vulnerability in shuffle leads to DoS
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
## Summary Due to unchecked multiplications, an integer overflow may occur, causing a fatal error. ## Impact Denial of Service ## Description The function [shuffle(int[] input)](https://github.com/xerial/snappy-java/blob/05c39b2ca9b5b7b39611529cc302d3d796329611/src/main/java/org/xerial/snappy/BitShuffle.java#L107) in the file [BitShuffle.java](https://github.com/xerial/snappy-java/blob/master/src/main/java/org/xerial/snappy/BitShuffle.java) receives an array of integers and applies a bit shuffle on it. It does so by multiplying the length by 4 and passing it to the natively compiled shuffle function.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- GHSA-pqr6-cmr2-h8hf
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Jun 15, 2023 · Last refreshed Oct 23, 2026