Privilege Escalation Vulnerability in Linux Kernel by Linux Foundation
CVE-2023-46813
7HIGH
Key Information:
- Vendor
Linux
- Status
- Vendor
- CVE Published:
- 27 October 2023
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2023-46813?
A vulnerability has been identified in versions of the Linux kernel prior to 6.5.9, which allows local users with access to MMIO registers to exploit incorrect access checks in the #VC handler. The vulnerability centers around instruction emulation within SEV-ES that can enable arbitrary write access to kernel memory, facilitating privilege escalation. This flaw relies on a race condition where a userspace application can replace an instruction before it is processed by the #VC handler, leading to potential unauthorized control over the kernel.
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.