CVE-2023-6121 Kernel: nvme: info leak due to out-of-bounds read in nvmet_ctrl_find_get
A remote attacker can leak kernel memory contents via a crafted TCP packet in the NVMe-oF subsystem, exposing sensitive data to the kernel ring buffer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-6121?
CVE-2023-6121 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 16 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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).
Weakness: CWE-125
Which versions are affected by CVE-2023-6121?
It affects 1 product.
Products include Redhat Enterprise Linux.
How do I fix CVE-2023-6121?
Apply the vendor's patch.
Is CVE-2023-6121 being exploited?
There is no known exploitation of CVE-2023-6121 in the wild and no public exploit code.
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Sources
Also known as BELL-CVE-2023-6121, DEBIAN-CVE-2023-6121, GHSA-m4j9-h84h-3gqr, UBUNTU-CVE-2023-6121.