CONFIG_RETHUNK: Enable return-thunks

General informations

The Linux kernel configuration item CONFIG_RETHUNK:

• prompt: Enable return-thunks
• type: bool
• depends on: ( CONFIG_RETPOLINE && CONFIG_CC_HAS_RETURN_THUNK ) && ( CONFIG_X86_64 )
• defined in arch/x86/Kconfig
• found in Linux kernels: 5.19, 6.0–6.8

Help text

Compile the kernel with the return-thunks compiler option to guard against kernel-to-user data leaks by avoiding return speculation. Requires a compiler with -mfunction-return=thunk-extern support for full protection. The kernel may run slower.

Hardware

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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