WebbCONFIG_SLAB_FREELIST_RANDOM - SLAB freelist randomization - BoxMatrix FRITZ!Box Research Wiki. If you like BoxMatrix then please contribute Supportdata, Supportdata2, Firmware and/or Hardware (get in touch). My [email protected] is not reachable by me since september. Webb23 feb. 2024 · Enabling ARCH_HAS_ELF_RANDOMIZE, which will make repeat exploits much more difficult by randomizing certain memory locations. While these will add CPU overhead to some degree: Enabling DEBUG_VIRTUAL will enable some sanity checking in virt_to_page translation at the cost of CPU cycles.
kernel-hardening - Re: [RFC v2 2/2] mm: SLUB Freelist randomization
Webb3 apr. 2024 · The random > selection is based on the location of code that calls `kmalloc ()`, which > means it is static at runtime (rather than dynamically determined at > each time of allocation, which could be bypassed by repeatedly spraying > in brute force). In this way, the vulnerable object and memory allocated Webbinteresting in 1994, but not with contemporary CPUs. So all the slab allocator does today is just adding an unnecessary layer of complexity over the page allocator. Thus, with this patch, all three slab allocators are removed, and only a layer that passes everything to the page allocator remains in the slab.h and mm/slab_common.c files. scripting tips for shifting realities
スラブアロケータのfree list randomizationの実装について - Qiita
Webb> Provide an optional config (CONFIG_FREELIST_RANDOM) to randomize the > SLAB freelist. It may be useful to describe _how_ it randomizes it (i.e. a high-level description … WebbOn Tue, 26 Apr 2016 09:21:10 -0700 Thomas Garnier wrote: > Provides an optional config (CONFIG_FREELIST_RANDOM) to randomize the > SLAB freelist. The list is randomized during initialization of a new set > of pages. The order on different freelist sizes is pre-computed at boot > for performance. WebbSigned-off-by: GONG, Ruiqi --- v0: The current implementation only randomize slab caches for KMALLOC_NORMAL allocation. Besides the patch itself, we would also like to know the opinion of the community about whether or not it's necessary to extend this randomization to all KMALLOC_*, and if so, if implementing a three- … scripting therapy