CVE-2026-54896
Description
A flaw was found in Oj (Optimized JSON), a Ruby gem used for processing JSON data. This vulnerability occurs when the software attempts to serialize (convert into a format for storage or transmission) Exception objects with a very large indentation setting. The internal process for handling this serialization does not properly manage memory, leading to a heap buffer overflow. This memory corruption could allow an attacker to disrupt the application, causing a denial of service, or potentially execute unauthorized code.
Statement
Red Hat's only product shipping the Oj Ruby gem (Compliance Backend) already includes version 3.17.3, which contains the fix for this vulnerability. No Red Hat products are affected.
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.
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