What is CVE-2025-40019?

CVE-2025-40019 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.4 onward and patched in 5.4.301, 5.10.246, 5.15.195 and others. CVE-2025-40019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-40019?

CVE-2025-40019 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2025-40019?

Yes, CVE-2025-40019 has been patched. Fixed versions include 5.4.301, 5.10.246, 5.15.195 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-40019 actively exploited?

CVE-2025-40019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

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

Package Linux Kernel

Published 2025-10-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 5.4 and later are affected. Fixed in 5.4.301, 5.10.246, 5.15.195, 6.1.157, 6.6.113, 6.12.54, 6.17.4, 6.18 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.4.301 5.4.x ✓ 5.10.246 5.10.x ✓ 5.15.195 5.15.x ✓ 6.1.157 6.1.x ✓ 6.6.113 6.6.x ✓ 6.12.54 6.12.x ✓ 6.17.4 6.17.x ✓ 6.18

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2025-40019?

CVE-2025-40019 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.4 onward and has been patched in 5.4.301, 5.10.246, 5.15.195 and others. CVE-2025-40019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2025-40019?

Yes. CVE-2025-40019 has been patched. Fixed versions include 5.4.301, 5.10.246, 5.15.195 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-40019 actively exploited?

No. CVE-2025-40019 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.