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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00068.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel
Redhat
  • Enterprise Linux
  • Rhel Eus

Configuration 1 [-]

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Configuration 2 [-]

OR cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10 cpe:/a:redhat:enterprise_linux:8::nfv RHSA-2024:3627 2024-06-05T00:00:00Z
kernel-0:4.18.0-553.5.1.el8_10 cpe:/o:redhat:enterprise_linux:8 RHSA-2024:3618 2024-06-05T00:00:00Z
Red Hat Enterprise Linux 9
kernel-0:5.14.0-427.16.1.el9_4 cpe:/a:redhat:enterprise_linux:9 RHSA-2024:2758 2024-05-08T00:00:00Z
kernel-0:5.14.0-427.16.1.el9_4 cpe:/o:redhat:enterprise_linux:9 RHSA-2024:2758 2024-05-08T00:00:00Z
Red Hat Enterprise Linux 9.0 Extended Update Support
kernel-0:5.14.0-70.101.1.el9_0 cpe:/a:redhat:rhel_eus:9.0 RHSA-2024:3421 2024-05-28T00:00:00Z
kernel-rt-0:5.14.0-70.101.1.rt21.173.el9_0 cpe:/a:redhat:rhel_eus:9.0::nfv RHSA-2024:3414 2024-05-28T00:00:00Z
Red Hat Enterprise Linux 9.2 Extended Update Support
kernel-0:5.14.0-284.62.1.el9_2 cpe:/a:redhat:rhel_eus:9.2 RHSA-2024:1881 2024-04-18T00:00:00Z
kernel-rt-0:5.14.0-284.62.1.rt14.347.el9_2 cpe:/a:redhat:rhel_eus:9.2::nfv RHSA-2024:1882 2024-04-18T00:00:00Z

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/errata/RHSA-2024:1881 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:1882 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:2758 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:3414 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:3421 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:3618 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2024:3627 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2023-6240 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2250843 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-6240 cve-icon
https://people.redhat.com/~hkario/marvin/ cve-icon cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20240628-0002/ cve-icon
https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/ cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-6240 cve-icon
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00067}

 epss

{'score': 0.00051}

Fri, 22 Nov 2024 12:00:00 +0000

Type Values Removed Values Added
References

Thu, 07 Nov 2024 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sat, 14 Sep 2024 00:45:00 +0000

Type Values Removed Values Added
References
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-09-26T06:27:11.306Z

Reserved: 2023-11-21T12:10:21.499Z

Link: CVE-2023-6240

cve-icon Vulnrichment

Updated: 2024-08-02T08:21:18.112Z

cve-icon NVD

Status : Modified

Published: 2024-02-04T14:15:47.787

Modified: 2024-11-21T08:43:26.437

Link: CVE-2023-6240

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-09-25T00:00:00Z

Links: CVE-2023-6240 - Bugzilla

cve-icon OpenCVE Enrichment

No data.