CVE detail
CVE-2023-46813 — CVE-2023-46813
Published 2023-10-27 · Modified 2026-06-17 · Vendor linux · Product linux_kernel · Source nvd
HIGH
severity
CVSS-derived band
0.0069
EPSS probability
exploitation probability, 30d
49.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog
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.
Remediation
No vendor-published fix data in our corpus for this CVE. Check the references below or the vendor's PSIRT / security advisories page.
References