CVE-2023-53769
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BaseFortify

Publication date: 2025-12-08

Last updated on: 2025-12-08

Assigner: kernel.org

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.

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Meta Information

Published
2025-12-08
Last Modified
2025-12-08
Generated
2026-07-06
AI Q&A
2025-12-08
EPSS Evaluated
2026-07-05
NVD
CVE-2023-53769
EUVD
EUVD-2023-60059

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves the encryption algorithms in the virt/coco/sev-guest component reading and writing directly to shared unencrypted memory. This improper handling can lead to information leakage and allows the host to tamper with the integrity of messages. The correct approach is to copy entire messages in or out of memory before performing any encryption or decryption computations.

Impact Analysis

The vulnerability can lead to sensitive information being leaked due to the use of shared unencrypted memory. Additionally, it allows an attacker with host access to tamper with the integrity of encrypted messages, potentially compromising the confidentiality and trustworthiness of communications or data processed by the affected system.

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