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CVE-2026-72383

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: sctp: fix addr_wq_timer race in sctp_free_addr_wq() sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete() w…

Published Aug 15, 2026EPSS 0.16%

Overview

CVE-2026-72383 is a high-severity vulnerability. It was published on August 15, 2026 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:

sctp: fix addr_wq_timer race in sctp_free_addr_wq()

sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete()

while holding addr_wq_lock. However, timer_delete() does not guarantee that

a currently running timer handler has completed.

This allows a race with sctp_addr_wq_timeout_handler(), where the handler

may still run after addr_waitq has been freed, acquire addr_wq_lock, and

access freed memory, leading to a use-after-free.

Fix this by calling timer_shutdown_sync() before taking addr_wq_lock. This

guarantees that any in-flight timer handler has finished and prevents the

timer from being re-armed during teardown, making subsequent cleanup safe.

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/976c19de0f22a857ba0112f39635f8fd7a257568Refgit.kernel.org/stable/c/a8323fb2ab6cd6978f359daeed6688e0cadf32baRefgit.kernel.org/stable/c/c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72383?

CVE-2026-72383 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-72383?

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-2026-72383?

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-2026-72383?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72383 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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