CVE-2025-38459

A flaw was found in the Linux kernel's Asynchronous Transfer Mode (ATM) Classical IP (CLIP) module. A local user can trigger an infinite recursive call in the clip_push() function by repeatedly calling the ioctl(ATMARP_MKIP) system call. This vulnerability occurs when the socket is closed, leading to stack exhaustion and a kernel crash, resulting in a Denial of Service (DoS).

This vulnerability is rated as Moderate impact for Red Hat Enterprise Linux because exploitation requires local access and results exclusively in a system crash without compromising confidentiality or integrity. In standard enterprise deployments, the Classical IP over ATM subsystem is not actively used, which substantially limits practical exposure. An authenticated local attacker can manipulate ATM socket operations to cause kernel stack exhaustion, triggering an unexpected system panic and denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.