VULNERABILITY INTELLIGENCE
CVE-2023-53769
CVSS score9.3 CRITICAL
EPSS probability0.10%
CISA KEVNot currently listed
Published2025-12-08
Last modified2026-08-04
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.