VULNERABILITY INTELLIGENCE

CVE-2023-46813

CVSS score7 HIGH
EPSS probability0.73%
CISA KEVNot currently listed
Published2023-10-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: NVD-CWE-Other

Primary references