CVE-2026-42996
Description
A flaw was found in JS8Call and JS8Call-improved. A remote attacker can exploit a stack-based buffer overflow by sending a specially crafted radio transmission containing "@APRSIS GRID" followed by an excessively long Maidenhead locator. This vulnerability, occurring in the grid2deg function, could lead to arbitrary code execution or a denial of service (DoS) on the affected system.
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,Confidentiality,Availability
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of the product's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the product into an infinite loop.
Frequently Asked Questions
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