CVE-2026-90556
Description
A flaw was found in Freeciv. This vulnerability, a heap buffer overflow in the worklist_load() function, occurs when processing specially crafted savegame files. An attacker can create a malicious savegame file that, when loaded by a user or server operator, causes memory corruption. This could lead to system instability or other unpredictable behavior.
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.
Mitigation
To mitigate this issue, users should avoid loading Freeciv savegame files from untrusted or unknown sources. Additionally, running Freeciv within a sandboxed environment can limit the potential impact of memory corruption if a malicious savegame is inadvertently loaded.
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
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