Linux Kernel Vulnerability: Rust Compiler Annotations Affect System Boot Stability

CVE-2026-53346

What is CVE-2026-53346?

A flaw in the Linux kernel arises from a bug in the Rust compiler related to the uwtable annotations not being correctly emitted for module functions. This deficiency can result in improper handling during boot processes when specific configurations are enabled. The mismatch in handling 'paciasp' and 'autiasp' instructions can lead to severe boot failures, particularly when invoking constructors during system initialization. Users and system administrators should take precautionary steps and ensure that they are using updated versions of Rust and the Linux kernel to mitigate potential crashes and stability issues.

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