Vulnerability in Linux

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.

Published · last modified .

EPSS exploit prediction

EPSS: 0.003 (19.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-40019: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

  • Linux — versions be1eb7f78aa8fbe34779c56c266ccd0364604e71, 5.4, 0

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-40019?
CVE-2025-40019 is a vulnerability in Linux. Published 2025-10-24.
Is CVE-2025-40019 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.