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Linux Kernel Security Linux Kernel Security @linkersec · 4.72K subscribers
Post #321 4.32K
Exploiting the CVE-2025-21756 1-day vulnerability

Hyunwoo Kim and Wongi Lee posted a kernelCTF report about exploiting a UAF in the vsock subsystem of the Linux kernel.

The researchers leaked the kernel base address using the EntryBleed side-channel attack and then turned the UAF on the vsock_sock structure into a RIP control primitive to execute a ROP-chain.
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