CVE-2026-45837

A flaw was found in the Linux kernel. A use-after-free vulnerability exists in the arena_vm_close function during a fork operation. This occurs because the child's Virtual Memory Area (VMA) is not correctly registered, leading to a dangling pointer. If a child process attempts to access this stale pointer, it can trigger memory corruption, potentially allowing a local attacker to achieve privilege escalation or cause a 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.