CONFIG_MITIGATION_RETBLEED: Mitigate RETBleed hardware bug

General informations

The Linux kernel configuration item CONFIG_MITIGATION_RETBLEED:

• prompt: Mitigate RETBleed hardware bug
• type: bool
• depends on: ( CONFIG_CPU_SUP_INTEL && CONFIG_MITIGATION_SPECTRE_V2 ) || CONFIG_MITIGATION_UNRET_ENTRY || CONFIG_MITIGATION_IBPB_ENTRY
• defined in arch/x86/Kconfig
• found in Linux kernels: 6.12–6.13, 6.14-rc+HEAD

Help text

Enable mitigation for RETBleed (Arbitrary Speculative Code Execution with Return Instructions) vulnerability. RETBleed is a speculative execution attack which takes advantage of microarchitectural behavior in many modern microprocessors, similar to Spectre v2. An unprivileged attacker can use these flaws to bypass conventional memory security restrictions to gain read access to privileged memory that would otherwise be inaccessible.

Hardware

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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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