CVE-2026-64440
Description
A flaw was found in the Linux kernel's rtl8723bs Wi-Fi driver. A remote attacker, by operating a malicious Access Point (AP), can send a specially crafted 802.11 AssocResponse frame. This can trigger an out-of-bounds write vulnerability in the HT_caps_handler() function, leading to memory corruption. This memory corruption could allow an attacker to cause a denial of service or potentially execute arbitrary code.
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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