CVE-2023-6240 MEDIUM

CVE-2023-6240: Kernel: marvin vulnerability side-channel leakage in the rsa decryption operation

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-203
Published February 4, 2024
Last update November 8, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

What the vulnerability does

01Description

A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.

Key dates

02Disclosure timeline

February 4, 2024 CVE published
November 8, 2025 Record updated