CVE-2023-6121

MediumCVSS 4.3/10Last modified Nov 6, 2026

Description

An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This issue may allow a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data being printed and potentially leaked to the kernel ring buffer (dmesg).

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-125

Affected software

VendorProductVersions
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 9—
SiemensRUGGEDCOM RST2428P—
SiemensSCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family—
SiemensSCALANCE XCM-/XRM-/XCH-/XRH-300 family—
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.0, < V3.1.5
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.0, < V3.1.5
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.0, < V3.1.5
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.0, < V3.1.5
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystem< V1.1.1
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.0, < V3.1.5

References

Timeline

Published
Nov 16, 2023
Last modified
Nov 6, 2026
NVD status
Modified

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CVE-2023-6121: Medium severity, CVSS 4.3 | Vulnix