CVE-2026-43386
Description
A flaw was found in the Linux kernel's rtl8723bs component. An incorrect length check within the rtw_restruct_wmm_ie function can lead to an out-of-bounds read. This vulnerability occurs because the code attempts to access memory beyond the allocated buffer before verifying the index is within bounds. This could potentially allow an attacker to read sensitive information or cause a denial of service.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Read Memory; Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of a program'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 program into an infinite loop.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
