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CVE-2024-50207

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix reader locking when changing the sub buffer order The function ring_buffer_subbuf_order_set() updates each rin…

Published Nov 8, 2024CWE-667EPSS 0.15%

Overview

CVE-2024-50207 is a high-severity vulnerability. It was published on November 8, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

ring-buffer: Fix reader locking when changing the sub buffer order

The function ring_buffer_subbuf_order_set() updates each

ring_buffer_per_cpu and installs new sub buffers that match the requested

page order. This operation may be invoked concurrently with readers that

rely on some of the modified data, such as the head bit (RB_PAGE_HEAD), or

the ring_buffer_per_cpu.pages and reader_page pointers. However, no

exclusive access is acquired by ring_buffer_subbuf_order_set(). Modifying

the mentioned data while a reader also operates on them can then result in

incorrect memory access and various crashes.

Fix the problem by taking the reader_lock when updating a specific

ring_buffer_per_cpu in ring_buffer_subbuf_order_set().

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/09661f75e75cb6c1d2d8326a70c311d46729235fRefgit.kernel.org/stable/c/a569290525a05162d5dd26d9845591eaf46e5802

How CyberStrike helps

Frequently asked questions

What is CVE-2024-50207?

CVE-2024-50207 is a high-severity vulnerability. It was published on November 8, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-50207?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-50207?

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-2024-50207?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-50207 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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