CVE-2025-21698
Description
[REJECTED CVE] In the Linux kernel, the following vulnerability has been resolved:
Revert "usb: gadget: u_serial: Disable ep before setting port to null to fix the crash caused by port being null"
It is reported to cause crashes on Tegra systems.
Statement
This CVE has been rejected upstream: https://lore.kernel.org/linux-cve-announce/2025021357-REJECTED-cfdb@gregkh/
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.
Integrity,Confidentiality
Technical Impact: Execute Unauthorized Code or Commands; Read Memory; Modify Memory
In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
