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CONFIG_SLAB_FREELIST_HARDENED: Harden slab freelist metadata

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The Linux kernel configuration item CONFIG_SLAB_FREELIST_HARDENED:

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Many kernel heap attacks try to target slab cache metadata and other infrastructure. This options makes minor performance sacrifices to harden the kernel slab allocator against common freelist exploit methods. Some slab implementations have more sanity-checking than others. This option is most effective with SLUB.



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