CVE-2023-53663 is a vulnerability in the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem, specifically affecting nested SVM (Secure Virtual Machine) functionality. An authenticated local attacker can trigger a kernel warning and denial of service by manipulating MSR_AMD64_TSC_RATIO and guest CPUID settings. Rated Medium severity (CVSS 5.5), this flaw has a low attack complexity and requires local user privileges, leading to high availability impact but no confidentiality or integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.16, < 6.1.54CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.2, < 6.5.4CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.