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CVE-2026-23193

8.8 · HIGH

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

Published Feb 14, 2026CWE-416EPSS 0.28%

Overview

CVE-2026-23193 is a high-severity vulnerability. It was published on February 14, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. 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_session_usage_count()

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

holding the sess->session_usage_lock. Similar to the connection usage count

logic, the waiter signaled by complete() (e.g., in the session release

path) may wake up and free the iscsit_session structure immediately.

This creates a race condition where the current thread may attempt to

execute spin_unlock_bh() on a session structure that has already been

deallocated, resulting in a KASAN slab-use-after-free.

To resolve this, release the session_usage_lock before calling complete()

to ensure all dereferences of the sess pointer are finished before the

waiter is allowed to proceed with deallocation.

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/11ebafffce31efc6abeb28c509017976fc49f1caRefgit.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46dRefgit.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7Refgit.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4Refgit.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9aRefgit.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9Refgit.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23193?

CVE-2026-23193 is a high-severity vulnerability. It was published on February 14, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-23193?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-23193?

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-2026-23193?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23193 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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