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.
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.
References
The following references provide additional information about CVE-2025-40019 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/248ff2797ff52a8cbf86507f9583437443bf7685
-
PatchKernel patch commithttps://git.kernel.org/stable/c/29294dd6f1e7acf527255fb136ffde6602c3a129
-
PatchKernel patch commithttps://git.kernel.org/stable/c/6bb73db6948c2de23e407fe1b7ef94bf02b7529f
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.