cve/2023/CVE-2023-46813.md

CVE-2023-46813

Description

An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it.

POC

Reference

• https://bugzilla.suse.com/show_bug.cgi?id=1212649

Github

• https://github.com/Freax13/cve-2023-46813-poc
• https://github.com/nomi-sec/PoC-in-GitHub
• https://github.com/shakyaraj9569/Documentation