First published: Thu Nov 16 2023(Updated: )
An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This flaw allows a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data to be printed (and potentially leaked) to the kernel ring buffer (dmesg).
|Affected Software||Affected Version||How to fix|
|Redhat Enterprise Linux||=6.0|
|Redhat Enterprise Linux||=7.0|
|Redhat Enterprise Linux||=8.0|
|Redhat Enterprise Linux||=9.0|
CVE-2023-6121 is an out-of-bounds read vulnerability in the NVMe-oF/TCP subsystem in the Linux kernel.
CVE-2023-6121 allows a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that could potentially lead to data leakage.
CVE-2023-6121 has a severity rating of medium with a CVSS score of 4.3.
To fix CVE-2023-6121, users are advised to apply the appropriate security patches provided by their respective Linux distributions or vendor.
More information about CVE-2023-6121 can be found at the following references: [Red Hat Security Advisory](https://access.redhat.com/security/cve/CVE-2023-6121) and [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2250043).