CVE-2023-6121

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 3.1

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

EPSS

1.6% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2023-11-16

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• redhat:enterprise_linux

References

• https://access.redhat.com/errata/RHSA-2024:2394
• https://access.redhat.com/errata/RHSA-2024:2950
• https://access.redhat.com/errata/RHSA-2024:3138
• https://access.redhat.com/security/cve/CVE-2023-6121
• https://bugzilla.redhat.com/show_bug.cgi?id=2250043

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