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CVE-2023-53769
virt/coco/sev-guest: Double-buffer messages
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.

INFO

Published Date :

Dec. 8, 2025, 2:15 a.m.

Last Modified :

Dec. 8, 2025, 2:15 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2023-53769 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Copy messages to secure memory before processing to prevent host tampering and information leaks.
  • Copy messages into secure memory before processing.
  • Validate message integrity after processing.
  • Ensure encryption algorithms use secure memory access.
  • Update the Linux kernel to the latest version.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-53769.

URL Resource
https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf
https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b
https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad
https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-53769 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-53769 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-53769 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-53769 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Dec. 08, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf
    Added Reference https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b
    Added Reference https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad
    Added Reference https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.