CVE-2026-93452
Description
A flaw was found in snappy-java. An attacker can trigger a buffer overflow vulnerability in the Snappy.compress(ByteBuffer, ByteBuffer) function by providing specially crafted, incompressible data. This vulnerability allows the attacker to write past the end of the destination buffer, corrupting off-heap memory. The corruption ultimately leads to the termination of the Java Virtual Machine (JVM), resulting in a denial of service.
Statement
A flaw in snappy-java allows an attacker to terminate an application JVM when attacker-controlled, incompressible data is passed to Snappy.compress(ByteBuffer, ByteBuffer) with an undersized destination buffer. The native compression path can write beyond the supplied buffer and corrupt off-heap memory. SELinux, non-root execution, and container isolation may limit impact outside the application boundary but do not prevent application-level denial of service.
Mitigation
Validate destination buffer capacity against maximum theoretical compressed payload size prior to invoking Snappy.compress, or restrict untrusted compressed input vectors at network application boundaries.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
