Kernel Vulnerability Affecting Linux Products Due to Unvalidated Pointer in ATM Services

CVE-2026-31411

What is CVE-2026-31411?

A vulnerability in the Linux kernel's ATM subsystem arises from the handling of a vcc pointer, which is retrieved from userspace without proper validation. An attacker can send a crafted message to the kernel, leading to the dereferencing of an arbitrary pointer, which could potentially compromise system memory integrity. This security gap necessitates careful validation of incoming pointers to prevent unauthorized access and ensure robust system protection.

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