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CVE-2026-23216

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() In iscsit_dec_conn_usage_count(), the function calls c…

Published Feb 18, 2026CWE-416EPSS 0.14%

Overview

CVE-2026-23216 is a high-severity vulnerability. It was published on February 18, 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:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

In iscsit_dec_conn_usage_count(), the function calls complete() while

holding the conn->conn_usage_lock. As soon as complete() is invoked, the

waiter (such as iscsit_close_connection()) may wake up and proceed to free

the iscsit_conn structure.

If the waiter frees the memory before the current thread reaches

spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function

attempts to release a lock within the already-freed connection structure.

Fix this by releasing the spinlock before calling complete().

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/275016a551ba1a068a3bd6171b18611726b67110Refgit.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44Refgit.kernel.org/stable/c/48fe983e92de2c59d143fe38362ad17ba23ec7f3Refgit.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77fRefgit.kernel.org/stable/c/8518f072fc92921418cd9ed4268dd4f3e9a8fd75Refgit.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903Refgit.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23216?

CVE-2026-23216 is a high-severity vulnerability. It was published on February 18, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-23216?

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-2026-23216?

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-2026-23216?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23216 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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