CVE-2023-53769

high

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.

References

https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682

https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad

https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b

https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf

Details

Source: Mitre, NVD

Published: 2025-12-08

Updated: 2025-12-08

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

Severity: Low

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.0001