Linux Kernel up to 6.1.27/6.2.14/6.3.1 message integrity

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.1.27/6.2.14/6.3.1. This issue affects some unknown processing. Such manipulation leads to message integrity. This vulnerability is uniquely identified as CVE-2023-53769. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.1.27/6.2.14/6.3.1. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a message integrity vulnerability. Using CWE to declare the problem leads to CWE-924. The product establishes a communication channel with an endpoint and receives a message from that endpoint, but it does not sufficiently ensure that the message was not modified during transmission. The impact remains unknown. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2023-53769 since 12/08/2025. The exploitation is known to be easy. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/23/2026).

The vulnerability scanner Nessus provides a plugin with the ID 277775 (Linux Distros Unpatched Vulnerability : CVE-2023-53769), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.28, 6.2.15 or 6.3.2 eliminates this vulnerability. Applying the patch 577a64725bfd77645986168e953d405067ee565b/c27dafc4aa50a29ec927b3aa84ac7b430071f682/4b69c63f716cfda38e1210e65b68f67f6cee2ddf/965006103a14703cc42043bbf9b5e0cdf7a468ad is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (277775), EUVD (EUVD-2023-60059) and CERT Bund (WID-SEC-2025-2756). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Google Container-Optimized OS
• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• NetApp FAS
• NetApp AFF
• SUSE openSUSE
• RESF Rocky Linux
• Open Source Linux Kernel
• Microsoft Azure Linux

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.1.22
• 6.1.23
• 6.1.24
• 6.1.25
• 6.1.26
• 6.1.27
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7
• 6.2.8
• 6.2.9
• 6.2.10
• 6.2.11
• 6.2.12
• 6.2.13
• 6.2.14
• 6.3.0
• 6.3.1

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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