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CVE-2026-23411

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race between freeing data and fs accessing it AppArmor was putting the reference to i_private data on its end aft…

Published Apr 1, 2026CWE-362EPSS 0.14%

Overview

CVE-2026-23411 is a high-severity vulnerability. It was published on April 1, 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:

apparmor: fix race between freeing data and fs accessing it

AppArmor was putting the reference to i_private data on its end after

removing the original entry from the file system. However the inode

can aand does live beyond that point and it is possible that some of

the fs call back functions will be invoked after the reference has

been put, which results in a race between freeing the data and

accessing it through the fs.

While the rawdata/loaddata is the most likely candidate to fail the

race, as it has the fewest references. If properly crafted it might be

possible to trigger a race for the other types stored in i_private.

Fix this by moving the put of i_private referenced data to the correct

place which is during inode eviction.

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/13bc2772414d68e94e273dea013181a986948ddfRefgit.kernel.org/stable/c/2a732ed26fbd048e7925d227af8cf9ea43fb5cc9Refgit.kernel.org/stable/c/3ddb961d2929bbb3204a2bba21b5d8153cd3f7ccRefgit.kernel.org/stable/c/667df93769c02ff581c77d2d8f162147e719c557Refgit.kernel.org/stable/c/8e135b8aee5a06c52a4347a5a6d51223c6f36ba3Refgit.kernel.org/stable/c/a92c5e5086a87d082696245a8607666da3d80554Refgit.kernel.org/stable/c/ae10787d955fb255d381e0d5589451dd72c614b1Refgit.kernel.org/stable/c/eecce026399917f6efa532c56bc7a3e9dd6ee68b

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23411?

CVE-2026-23411 is a high-severity vulnerability. It was published on April 1, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-23411?

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-2026-23411?

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-2026-23411?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23411 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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