Out-of-Bounds Access Vulnerability in Linux Kernel Network Component

CVE-2026-64000

What is CVE-2026-64000?

A vulnerability in the Linux kernel's handling of supervision frames within the HSR (High-availability Seamless Redundancy) protocol can potentially lead to an out-of-bounds access. This issue arises when the TLV (Type-Length-Value) header is not fully linearized before being accessed. Specifically, if a truncated frame is processed, it could lead to unexpected behavior or crash the system, creating a significant risk for network stability and security. It is crucial for users to ensure they implement the latest patch that addresses this issue to safeguard their systems from potential exploitation.

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