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CVE-2025-38617

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() releases po->bind_lock, another thread…

Published Aug 22, 2025CWE-362EPSS 0.40%

Overview

CVE-2025-38617 is a high-severity vulnerability. It was published on August 22, 2025 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:

net/packet: fix a race in packet_set_ring() and packet_notifier()

When packet_set_ring() releases po->bind_lock, another thread can

run packet_notifier() and process an NETDEV_UP event.

This race and the fix are both similar to that of commit 15fe076edea7

("net/packet: fix a race in packet_bind() and packet_notifier()").

There too the packet_notifier NETDEV_UP event managed to run while a

po->bind_lock critical section had to be temporarily released. And

the fix was similarly to temporarily set po->num to zero to keep

the socket unhooked until the lock is retaken.

The po->bind_lock in packet_set_ring and packet_notifier precede the

introduction of git history.

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

Refblog.calif.io/p/a-race-within-a-race-exploiting-cveRefgit.kernel.org/stable/c/01d3c8417b9c1b884a8a981a3b886da556512f36Refgit.kernel.org/stable/c/18f13f2a83eb81be349a9757ba2141ff1da9ad73Refgit.kernel.org/stable/c/7da733f117533e9b2ebbd530a22ae4028713955cRefgit.kernel.org/stable/c/7de07705007c7e34995a5599aaab1d23e762d7caRefgit.kernel.org/stable/c/88caf46db8239e6471413d28aabaa6b8bd552805Refgit.kernel.org/stable/c/ba2257034755ae773722f15f4c3ad1dcdad15ca9Refgit.kernel.org/stable/c/e50ccfaca9e3c671cae917dcb994831a859cf588Refgit.kernel.org/stable/c/f1791fd7b845bea0ce9674fcf2febee7bc87a893Refgit.kernel.org/stable/c/f2e8fcfd2b1bc754920108b7f2cd75082c5a18df

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38617?

CVE-2025-38617 is a high-severity vulnerability. It was published on August 22, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38617?

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-2025-38617?

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-2025-38617?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38617 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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