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CVE-2023-52454

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length If the host sends an H2CData command with an invalid DA…

Published Feb 23, 2024CWE-476EPSS 0.68%

Overview

CVE-2023-52454 is a high-severity vulnerability. It was published on February 23, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length

If the host sends an H2CData command with an invalid DATAL,

the kernel may crash in nvmet_tcp_build_pdu_iovec().

Unable to handle kernel NULL pointer dereference at

virtual address 0000000000000000

lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp]

Call trace:

process_one_work+0x174/0x3c8

worker_thread+0x2d0/0x3e8

kthread+0x104/0x110

Fix the bug by raising a fatal error if DATAL isn't coherent

with the packet size.

Also, the PDU length should never exceed the MAXH2CDATA parameter which

has been communicated to the host in nvmet_tcp_handle_icreq().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88Refgit.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42Refgit.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02dRefgit.kernel.org/stable/c/70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68Refgit.kernel.org/stable/c/ee5e7632e981673f42a50ade25e71e612e543d9dRefgit.kernel.org/stable/c/efa56305908ba20de2104f1b8508c6a7401833beRefgit.kernel.org/stable/c/f775f2621c2ac5cc3a0b3a64665dad4fb146e510Refgit.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88Refgit.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42Refgit.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52454?

CVE-2023-52454 is a high-severity vulnerability. It was published on February 23, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-52454?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-52454?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52454?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52454 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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