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CVE-2023-52513

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix connection failure handling In case immediate MPA request processing fails, the newly created endpoint unlinks th…

Published Mar 2, 2024CWE-476EPSS 0.66%

Overview

CVE-2023-52513 is a high-severity vulnerability. It was published on March 2, 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:

RDMA/siw: Fix connection failure handling

In case immediate MPA request processing fails, the newly

created endpoint unlinks the listening endpoint and is

ready to be dropped. This special case was not handled

correctly by the code handling the later TCP socket close,

causing a NULL dereference crash in siw_cm_work_handler()

when dereferencing a NULL listener. We now also cancel

the useless MPA timeout, if immediate MPA request

processing fails.

This patch furthermore simplifies MPA processing in general:

Scheduling a useless TCP socket read in sk_data_ready() upcall

is now surpressed, if the socket is already moved out of

TCP_ESTABLISHED state.

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/0d520cdb0cd095eac5d00078dfd318408c9b5eedRefgit.kernel.org/stable/c/53a3f777049771496f791504e7dc8ef017cba590Refgit.kernel.org/stable/c/5cf38e638e5d01b68f9133968a85e8b3fd1ecf2fRefgit.kernel.org/stable/c/6e26812e289b374c17677d238164a5a8f5770594Refgit.kernel.org/stable/c/81b7bf367eea795d259d0261710c6a89f548844dRefgit.kernel.org/stable/c/eeafc50a77f6a783c2c44e7ec3674a7b693e06f8Refgit.kernel.org/stable/c/0d520cdb0cd095eac5d00078dfd318408c9b5eedRefgit.kernel.org/stable/c/53a3f777049771496f791504e7dc8ef017cba590Refgit.kernel.org/stable/c/5cf38e638e5d01b68f9133968a85e8b3fd1ecf2fRefgit.kernel.org/stable/c/6e26812e289b374c17677d238164a5a8f5770594

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52513?

CVE-2023-52513 is a high-severity vulnerability. It was published on March 2, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-52513?

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-2023-52513?

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-2023-52513?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52513 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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