CVE Catalog

CVE-2026-5398

High
Published: Translated: NVD NIST

Summary

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory.

Risk Assessment

A malicious process can abuse the dangling pointer to grant itself root privileges, posing a serious security risk to the system.

Recommendation

It is recommended to update the operating system to the latest version to mitigate this vulnerability and to monitor processes for potential abuse.

Related vulnerabilities

Original NVD description (English source)

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A malicious process can abuse the dangling pointer to grant itself root privileges.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS