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CVE-2024-49864

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix a race between socket set up and I/O thread creation In rxrpc_open_socket(), it sets up the socket and then sets up…

Published Oct 21, 2024CWE-362EPSS 0.45%

Overview

CVE-2024-49864 is a high-severity vulnerability. It was published on October 21, 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:

rxrpc: Fix a race between socket set up and I/O thread creation

In rxrpc_open_socket(), it sets up the socket and then sets up the I/O

thread that will handle it. This is a problem, however, as there's a gap

between the two phases in which a packet may come into rxrpc_encap_rcv()

from the UDP packet but we oops when trying to wake the not-yet created I/O

thread.

As a quick fix, just make rxrpc_encap_rcv() discard the packet if there's

no I/O thread yet.

A better, but more intrusive fix would perhaps be to rearrange things such

that the socket creation is done by the I/O thread.

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/56e415202b8a17de6496f4023e545fcb66f118ecRefgit.kernel.org/stable/c/bc212465326e8587325f520a052346f0b57360e6Refgit.kernel.org/stable/c/c64f5fc95e9612fdf75587c8e21e494e614c18e2Refgit.kernel.org/stable/c/cdf4bbbdb956d7426f687f38757ebca2a2759a0f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-49864?

CVE-2024-49864 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-49864?

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-2024-49864?

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-2024-49864?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-49864 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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