CVE-2023-6121

Advisory lineage Upstream: 0 Downstream: 38
Modified
Published: 16 Nov 2023, 14:45
Last modified:12 May 2026, 10:32

Vulnerability Summary

Overall Risk (default)
low
17/100
CVSS Score
4.3 MEDIUM
v3.1 (cve.org)
EPSS Score
0.66% LOW
1% probability +0.41%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Nov 2023, 14:45
Published
Vulnerability first disclosed
12 May 2026, 10:32
Last Modified
Vulnerability information updated

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).

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Trends

Current EPSS score: 0.66%• Percentile: 72%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • redhat•enterprise_linux

    6.0 | 7.0 | 8.0 | 9.0

References (9)