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Case File

CVE-2023-46813

HIGH · CVSS 7 EPSS 0.69% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-10-27 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.0. It affects Linux. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-46813
Severity
HIGH
CVSS
7
EPSS
0.69%
Linux

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)