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CVE-2025-40019

In the Linux kernel, the following vulnerability has been resolved: crypto: essiv - Check ssize for decryption and in-place encryption Move the ssize check to the start in essiv_aead_crypt so tha…

Published Oct 24, 2025EPSS 0.29%

Overview

CVE-2025-40019 is a known-severity vulnerability. It was published on October 24, 2025.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

crypto: essiv - Check ssize for decryption and in-place encryption

Move the ssize check to the start in essiv_aead_crypt so that

it's also checked for decryption and in-place encryption.

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/248ff2797ff52a8cbf86507f9583437443bf7685Refgit.kernel.org/stable/c/29294dd6f1e7acf527255fb136ffde6602c3a129Refgit.kernel.org/stable/c/6bb73db6948c2de23e407fe1b7ef94bf02b7529fRefgit.kernel.org/stable/c/71f03f8f72d9c70ffba76980e78b38c180e61589Refgit.kernel.org/stable/c/da7afb01ba05577ba3629f7f4824205550644986Refgit.kernel.org/stable/c/dc4c854a5e7453c465fa73b153eba4ef2a240abeRefgit.kernel.org/stable/c/df58651968f82344a0ed2afdafd20ecfc55ff548Refgit.kernel.org/stable/c/f37e7860dc5e94c70b4a3e38a5809181310ea9ac

How CyberStrike helps

Frequently asked questions

What is CVE-2025-40019?

CVE-2025-40019 is a known-severity vulnerability. It was published on October 24, 2025.

How severe is CVE-2025-40019?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2025-40019?

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-2025-40019?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-40019 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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