CVE-2026-81878
Description
A flaw was found in radare2, a UNIX-like reverse engineering framework. The CPython bytecode (.pyc) marshal parser is vulnerable to an integer overflow. By opening or inspecting a specially crafted .pyc file, an attacker can trigger a heap out-of-bounds write. This can lead to heap memory corruption and denial of service, with the potential for arbitrary code execution.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
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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