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Linux Kernel Security Linux Kernel Security @linkersec · 4.72K subscribers
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Utilizing Cross-CPU Allocation to Exploit Preempt-Disabled Linux Kernel

A talk (video) by Mingi Cho and Wongi Lee about exploiting a slab use-after-free bug in the netfilter subsystem and an out-of-bounds bug in the traffic control subsystem.

The researchers managed to exploit both bugs on the kernelCTF migitation instance. Notably, they relied on cross-CPU slab/page_alloc shaping techniques in both exploits.
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