What’s Vulnerable › Vulnerabilities
CVE-2023-6240: Kernel: marvin vulnerability side-channel leakage in the rsa decryption operation
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.0% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-02-04 · updated 2026-06-17
- Weakness: CWE-203
Description
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.
Affected products
- Linux kernel: all versions
- Red Hat Enterprise Linux: 7.0, 8.0, 9.0
References
- https://access.redhat.com/errata/RHSA-2024:1881
- https://access.redhat.com/errata/RHSA-2024:1882
- https://access.redhat.com/errata/RHSA-2024:2758
- https://access.redhat.com/errata/RHSA-2024:3414
- https://access.redhat.com/errata/RHSA-2024:3421
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://access.redhat.com/security/cve/CVE-2023-6240
- https://bugzilla.redhat.com/show_bug.cgi?id=2250843
- https://people.redhat.com/~hkario/marvin/
- https://securitypitfalls.wordpress.com/2023/10/16/experiment-with-side-channel-attacks-yourself/
- https://access.redhat.com/errata/RHSA-2024:1881
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