CVE-2025-39984

A use-after-free flaw was found in tun_get_user in drivers/net/tun.c in network TUNnel module in Linux kernel. This flaw could allow an attacker to crash the system at device disconnect. This vulnerability could even lead to a kernel information leak problem.

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.